Why Is Carbon Better Than Lead as a Neutron Absorber

Multiple Choice

Why is carbon better than lead as a neutron absorber in nuclear reactors?

A) Carbon produces the high energy, high speed neutrons necessary for maintaining the nuclear chain reaction.
B) Carbon slows down the neutrons making them more effective in stimulating the nuclear chain reaction.
C) Lead slows down the neutrons making them less effective in stimulating the nuclear chain reaction.