23. Marvin Services Corporation had the following accounts and balances: Accounts payable $18 Equipment Accounts receivable 3 Land Buildings Cash $20 ? Unearned service revenue6 9 Total stockholders' equity If the balance of the Buildings account was $7 and $3 of Accounts Payable were paid in cash, what would be the balance of the total stockholders' equity? a. $22 b. $6 c. $16 d. $10