If a Customer at a Particular Grocery Store Uses Coupons

Multiple Choice

If a customer at a particular grocery store uses coupons, there is a 50% probability that the customer will pay with a debit card. Thirty percent of customers use coupons and 35% of customers pay with debit cards. Given that a customer pays with a debit card, the probability that the same customer uses coupons is ------- .

A) 0.60
B) 0.22
C) 0.43
D) 0.72