Question : Which of the following is not a type of credit card?
Option 1: Visa
Option 2: Mastercard
Option 3: American Express
Option 4: None of the above
Correct Answer: None of the above
Solution : The correct answer is (d) None of the above
Visa, Mastercard, and American Express are all well-known types of credit cards. However, there are other credit card brands available in addition to these three, such as Discover, Diners Club, and JCB (Japan Credit Bureau), among others. So, the correct answer is "None of the above."