On the average, males have a slightly higher hematocrit than females.

Which of the following statements is accurate regarding antagonistic pleiotropy?

A) The net fitness effect of an allele experiencing antagonistic pleiotropy may depend on the environment.
B) Alleles experiencing antagonistic pleiotropy should always be strongly selected against.
C) Antagonistic pleiotropy results when a trait is influenced by more than one gene.
D) none of the above