Assume you borrow 1,000 in shares and sell them, hoping the share price will go down. However, after one month, the share price goes down just a bit, exactly to compensate the borrowing costs. Pick the single correct option below: a. One cannot tell if the net profit is zero or negative. b. The net profit is positive. c. The net profit is zero. d. One cannot tell if the net profit is positive or negative.