Using new information, determine parents genotypes and probability of disease

Individual IV-3 is born as a male affected with condition B but not condition A. His parents are bred again, and an ultrasound shows that the fetus is another male. The relevant portion of the pedigree is shown below.

Use this new information to determine the parents’ genotypes (indicated by red arrows). Then calculate the probabilities that the second male offspring will have each condition.
Drag one pink label to each pink target and one blue label to each blue target. Then use the white labels to answer questions 1 and 2. Labels can be used once, more than once, or not at all.

i have no idea how to do this, any help would be greatly appreciated