Assuming that the constant dividend growth model (i.e., Po - Di/tr-g) accurately describes the price of a share of stock, which one of the following relationships is correct (note: assume that all factors, other than the one mentioned, remain constant)? 1) If the required return decreases, the share price increases. 2) If the growth rate decreases, the share price remains the same (i.e., unchanged). 3) if the dividend decreases, the share price remains the same (i.e., unchanged). 4) if the dividend decreases, the share price increases. 5) If the growth rate decreases, the share price increases