d. Similar to brokers, they buy and sell at the same market price James bought 1,000 shares of stock at a price of $20 a share. He used his 60% margin account to make the purchase. James sold his stock after a year for $25 a share. Ignoring any margin interest, trading costs or taxes, what is James's return on investor equity for this investment? Select one or more: a. 62.5% b. 49.5% c. 25% d. 75%