Bob invests $5000 and buys 50 shares of preferred stock at $100 per share. He paid $5 in dividend per share quarterly. A) If the shares rise to $150 after 2 quarters and dividends are issued, how much did Bob gain or lose if he sells them? B) What is the yield or return on investment? C) If the share prices decline to $75 a share after 2 quarters and the dividends are issued, how much did Bob gain or lose if he sells?