Answer: (D) The left-hand of a T-account.
Explanation: The "T" account allows you to visualize the double-entry accounting principle, that is, where there is an increase in one item, there is a decrease for another. Account T is made up of the debit (on the left-hand) and the credit (on the right-hand). The debit records what corresponds to the client (Cash, a vehicle, account receivable) and the credit corresponds to what must be paid for (Bank debt, account payable)