nancy bought 50 shares of abc stock for $50 per share. she made additional purchases at the end of each of the following years: year 1: 10 shares at $52 per share year 2: 10 shares at $53 per share year 3: 10 shares at $45 per share abc stock has not paid any dividends during her holding period. at the end of year 4, the stock is trading for $55 per share. which of the following is nancy's return over the past four years on abc stock (assume she sells the stock for the current trading price)? a) 2.95% b) 3.25% c) 5.00% d) 4.65%