Answer:
Option b) A credit card balance
Explanation:
The credit card balance shows the amount you owe to the bank for purchases using credit card.
Credit card is meant for purchases without paying money actualy and after a fixed period paying to the bank full amount outstanding.
Periodically, all credit card transactions will be listed and sent to the customer with a due date within which the amount is to be paid.
IF amount is not paid within due date, a penalty will be charged besides interest for the delay.
Thus credit card balance is a liability since it is the amount due or amount outstanding to be paid to the bank within a certain period. This can be treated as current liability