Reason That Longevity May Have Evolved Slightly Differently in Humans

reason that longevity may have evolved slightly differently in humans than in other species is that:

A) our immune system is more advanced than that of most species.
B) we have the ability to manipulate the environment.
C) early hominids had significantly lower infant mortality that other,nonhuman primates.
D) our bodies are larger than expected for our low metabolic rate.