Why Is It Believed That Life Cannot Evolve on a Planet

Multiple Choice

Why is it believed that life cannot evolve on a planet that orbits a spectral type A, B, or O star

A) These stars produce too much infrared radiation which would destroy carbon-based organisms.
B) These stars have very small life zones.
C) These stars are not capable of producing planets.
D) These stars do not remain on the main sequence long enough for life to evolve.
E) These stars take too long to form.