An overdraft service is:
a. Means by which your credit card company lets you know that you have gone over your credit limit.
b. Mandatory service provided by credit card companies to prevent consumers from paying interest on balances.
c. Mandatory service for consumers provided by financial institutions to generally approve and pay overdraft transactions when the account holder does not have enough funds to cover the transactions. Financial institutions charge a fee for this service.
d. Voluntary service for consumers provided by financial institutions to generally approve and pay overdraft transactions when the account holder does not have enough funds to cover the transactions. Financial institutions charge a fee for this service.