A Bell Rings,an Animal Sits Up and Salivates,and Then the Experimenter

Multiple Choice

A bell rings,an animal sits up and salivates,and then the experimenter delivers food.This could be either classical or operant conditioning.To decide which one it is,what do we need to know?​

A) How rapidly the animal forgets during a period without training
B) Whether the animal sits up immediately after the bell, or after a delay​
C) Which happens first, sitting up or salivating​
D) Whether the bell always predicts food, or if only after the animal sits up​