In Sea Urchins,the "Fast Block" and the Longer-Lasting "Slow Block

Multiple Choice

In sea urchins,the "fast block" and the longer-lasting "slow block" to polyspermy,respectively,are

A) the acrosomal reaction and the formation of jelly coat.
B) the cortical reaction and the formation of cortical granules.
C) the jelly coat of the egg and the vitelline layer.
D) membrane depolarization and the cortical reaction.
E) inactivation of the sperm acrosome.