Which of the Following Statements About Blocks to Polyspermy in Sea

Multiple Choice

Which of the following statements about blocks to polyspermy in sea urchins is false?

A) Blocks to polyspermy are triggered by fusion of the plasma membranes of the sperm and egg and entry of the sperm into the egg.
B) Blocks to polyspermy prevent more than one sperm from entering an egg.
C) The fast block causes release of the acrosomal enzymes.
D) The fast block results from a change in electric-charge difference across the plasma membrane of the egg.
E) The slow block results from the release of calcium.