In a population of wild squirrels, most of them have gray fur, but an occasional squirrel is completely white. If we let P and p represent dominant and recessive alleles, respectively, of a gene that encodes an enzyme necessary for pigment formation, which of the following statements do you think is most likely to be correct?

a. The white squirrels are pp, and the p allele is a loss-offunction allele.

b. The gray squirrels are pp, and the p allele is a loss-offunction allele.

c. The white squirrels are PP, and the P allele is a loss-offunction allele.

d. The gray squirrels are PP, and the P allele is a loss-offunction allele.