The Recessive Allele of a Gene Causes Cystic Fibrosis

The recessive allele of a gene causes cystic fibrosis.For this gene among Caucasians,p = 0.98.If a Caucasian population is in Hardy- Weinberg equilibrium with respect to this gene,what proportion of babies is born homozygous recessive,and therefore suffers cystic fibrosis?

A) 0.02² = 0.0004
B) 0.98² = 0.9604
C) 0.02
D) 2(0.02 × 0.98) = 0.0392