The answer is "c. debit card".
Debit cards offer the comfort of a credit card yet work in an unexpected way. Debit cards draw cash straightforwardly from your financial records when you make the buy. They do this by setting a hang on the measure of the buy. At that point the dealer sends in the transaction to their bank and it is exchanged to the merchant's record. It can take a couple of days for this to occur, and the hold may drop off before the transaction experiences.