Masserman Et Al

Masserman et al. (1964) conducted a study whereby a monkey learned that, if he pulled a chain, he would get food and the monkey in the adjacent cage would be shocked. What did the monkey do once it learned chain pulling, food, and shock were all associated?

A) Nothing; the frequency of chain pulling was unchanged.
B) It pulled the chain, on average, just once a day.
C) It pulled the chain and split the food with the adjacent monkey.
D) It stopped pulling the chain and thus voluntarily starved itself.