Genetics question

I guess the first column of the offsprings are "solid" and the second is "stripped"? (for example 55 solid and 60 stripped for the first crossing). In that case:

First of all, since there isn't any information about the gender, we assume that male and female proportions are about equal and the allele is autosomal.

Lets symbolize the allele for solid as "S" and the allele of stripped as "s".
Seeing the D crossing we can easily say that the allele for stripped is recessive. That is because, the "stripped" allele has passed from parents to offsprings (so, at least one of the parents had a "stripped" allele) but none of them expressed the "stripped" trait.

Lets symbolize the dominant allele for solid as "S" and the recessive allele of stripped as "s".
All stripped parents must be ss (homozygous to the recessive.)

A): Think that, since there are some stripped offsprings, both parents must have at least one s allele. The stripped parent is clearly ss. The solid parent must be Ss. (if he was SS then all offsprings would have one S allele and would have been solid.)
so, the answer is Ss x ss

B): All offsprings must have at least one S allele. Both parents also have at least one S allele. If both parents were heterozygous (Ss) then some of the offsprings would have been ss (stripped). Since this is not the case, at least one of the parents must be SS (so that he passes one S to every offspring.
We only need one of the parent to be SS. So, there are 3 possibilities: SS x Ss OR SS x SS OR Ss x SS

C): Well, it's kind of obvious that both parents are ss since they are stripped. As expected, the offsprings are also stripped (ss) since they got one s from each parent.
Answer: ss x ss

D): Seeing that we have some "stripped" offsprings (stripped = ss) it means that, the parents have at lease one s each. In addition, the parents must also have one S each because they are Solid. So they are both Ss.
Answer: Ss x Ss

E) The stripped parent is ss. The solid parent could be Ss or SS. But, if the solid parent was Ss, then at least some of the offsprings would have got an s from the solid parent and an s from the stripped parents to be ss (stripped). However, since all offsprings are solid this is not possible. So, the solid parent is SS.
Answer: SS x ss.