Which statement about an accounts payable transaction is true? a) Accounts payable transactions arise solely from inventory purchases and not service-related payments. b) Accounts payable increases with a credit when there's a purchase, and accounts payable decreases with a debit when the bill is paid. c) When a purchase is made, accounts payable is increased with a debit, and when the bill is paid, accounts payable is decreased with a credit. d) Accounts payable represents a note; a vendor ensures the company signs an agreement with interest paid