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Which of the following are true concerning short sales of exchange-listed stocks? 1. Proceeds from the short sale must be kept on deposit with the broker. 2. Short-sellers must post margin with their broker to cover potential losses on the position. 3. The short-seller earns interest on any cash deposited with the broker that is used to meet the margin requirement. Multiple Choice 1 and 3 only 1,2 , and 3 tand 2 onty tonly