on 14 February Mark pays $850 wages in cash to his receptionist for work performed during this transaction on the accounting equation is: O a. Decrease in cash at bank $850; increase in equity $850 O b. Decrease in cash at bank $850; increase in liability accounts payable 5850 O c. Decrease in cash at bank $850; decrease in equity $850. O d. Decrease in cash at bank $850; decrease in liability accounts payable $850