im not sure about those 3 please help

15. Which of the following is incorrect? O A. The left side of a T-account is the debit side and the right side of a T-account is the credit side. B. In double-entry accounting each transaction must effect at least two accounts. O C. Total debits to a particular account must always equal the total credits to that account. OD. The accounting equation must always stay in balance. 2 pts > Question 16 16. All of the following accounts have a normal credit balance except O A. Unearned revenue M B. Equipment OC. Notes payable O D. Common stock Question 17 2 pts 17. A debit would make which of the following accounts decrease? A Dividends OB. Accounts receivable Notes payable OD Advertising expense