A marketing firm tracks data on grocery store visits. In one study, it finds that the probability that a shopper buys bread during a visit to the grocery store is 0.60, and the probability that a shopper buys cheese is 0.20. Event A = A shopper buys bread.
Event B = A shopper buys cheese.
A and B are independent events if .

A. the probability of buying bread or cheese is 0.80
B. the probability of buying bread and cheese is 0.12
C. the probability of buying bread and cheese is 0
D. the probability of buying bread or cheese is 0.12