Once a True Cell Was Formed Biological Evolution Began

Once a true cell was formed biological evolution began.Biological evolution is all the changes that have occurred in living things since the beginning of life due to differential reproductive success.This means that

A) Living things have been evolving toward the perfect form.
B) Living things have begun reproducing.
C) Living things have all evolved from a common ancestor.
D) Life has recently begun to change through evolutionary processes.
E) Life has evolved to become increasingly complex.