Which of the Following Statements Does NOT Relate to Antipredator

Which of the following statements does NOT relate to antipredator behavior and defense against snakes in California ground squirrels?

A) Young squirrel pups have low serum-to-venom binding levels.
B) Serum-to-venom binding levels increase after the pups emerge from the burrow, which corresponds with an increase in snake predation risk.
C) Serum-to-venom binding levels in squirrel pups change only when the pups are exposed to snakes early in life.
D) High serum-to-venom binding levels indicate strong defenses against snakebites.
E) Squirrel pups emerge from their natal burrows when they are about forty days old.