Although They Are Unaware of Their Separate Conversations, John and His

Although they are unaware of their separate conversations, John and his buddies and Janet and her friends all talk about wanting to find as spouses someone who is good looking, physically fit, smart, and cooperative. Such preferences for specific characteristics in mates for the purposes of passing on these preferred characteristic to their offspring is an example of:

A) Echogenic maximization
B) Intersexual sequencing
C) Intrasexual preference
D) Epigamic selection
E) Generational sequencing