Answer: d. subtraction of $42,000.
Explanation:
An increase in Current Assets such as Accounts Receivable is considered to be a cash outflow because it means that more assets were not converted to actual cash.
A decrease in Current Liabilities is a cash outflow as well as it means that the company used cash to pay off these liabilities thereby reducing the cash balance.
Combined Effect is therefore = -28,000 - 14,000
= -$42,000