Both Peggy and Bob Are Farsighted

Multiple Choice

Both Peggy and Bob are farsighted.If their child is nearsighted,then it follows that

A) both Peggy and Bob lack a gene for farsightedness.
B) only Peggy has a recessive gene for farsightedness.
C) only Bob lacks a gene for nearsightedness.
D) both Peggy and Bob have a recessive gene for nearsightedness.