In the Section "Investigating Life: Evolving Backwards",what Was Hypothesized About

In the section "Investigating Life: Evolving Backwards",what was hypothesized about the loss of legs in modern-day snakes?

A) Snakes descended from land-dwelling or marine ancestors.
B) Snakes descended only from burrowing lizards on land.
C) Snakes descended only from marine lizards.
D) Snakes do not have forelimbs or hindlimbs.
E) Some extant snakes have forelimbs or hindlimbs.