In order to obtain a profile on her customers and better understand their needs, the credit manager of a certain store collected data on the last 120 customers to enter the store. Of the 40 men (M) in the group, 30 had a credit card (C) for the store. Of the 80 women (W), 50 had a credit card. While none of the men had a positive credit balance (B), 30 of the women reported a positive balance on their account. The credit manager wanted to determine the probability that if a customer was selected at random that customer:
a. Was a women with a credit card
b. Was a woman with a positive balance
c. was a man without a credit card