Which statement by a parent indicates a need for the nurse to intervene with teaching?

Which statement by a parent indicates a need for the nurse to intervene with teaching?
 
  a. I put my newborn baby on her back when she goes to sleep. I understand this is the best position.
  b. Jennifer's eyes sometimes cross, but I know that this is normal in 1-month-old babies.
  c. My 5-month-old infant has been drooling, biting, and running a fever for the past few days. I think he's teething.
  d. My neighbor has been giving her baby solids since he was 8 weeks old. I think I'll wait until my baby is about 5 months old.