Answer:
A. Credits
B. Risk
Step-by-step explanation:
Charles is offering his customers to buy goods on credits. He is neither offering any discount (as the price of the high-end electronic gadgets are not changing) nor is he seeking any loyalty from his customers.
While the benefit Charles is gaining from this is that the risk involved in giving credit through credit card is being mitigated. If Charles had himself given the credit, then there would have been the risk of non-payment which he would have to bear. In this case the supporting bank or any other financial institution will bear the risk if the end buyer does not pay the credit card bill on time.