Vervet Monkeys Have Three Main Predators - the Eagle, the Snake

Vervet monkeys have three main predators - the eagle, the snake and the leopard. If a vervet monkey sees a predator, he or she emits:

A) a specific alarm call that signals to other vervet monkeys the type of predator that has been spotted.
B) a general alarm call that does not distinguish the type of predator, but rather that a threat has been identified.
C) no alarm call, and instead takes cover in undergrowth in an effort to go undetected.
D) no alarm call, and instead approaches the predator in an effort to distract attention away from other members of its colony.