Select the correct answer. Which situation indicates that an investor shouldn’t sell his or her stocks? A. The price of the stock shows a negative trend, and the current stock price is lower than the investor’s purchase price. B. The price of the stock shows a negative trend, and the current stock price is higher than the investor’s purchase price. C. The price of the stock shows a positive trend, and the current stock price is lower than the investor’s purchase price. D. The price of the stock shows a positive trend, and the current stock price is the same as the investor’s purchase price.