Answer: It is deducted directly from your checking account
Explanation:
A Debit card is linked to your bank account so when it is used, it will always be deducted directly from your checking account.
The Debit or Credit option simply refers to how the transaction will be processed. With a Debit the transaction goes through a different computer network than the Credit which goes through the Credit computer network.
Bottom-line is that debit cards are bank accounts.