Suppose the firm uses its excess cash to buy back its stock. How many shares will you sell to have an after-tax amount equal to the after-tax amount you would have had if the firm had paid its excess cash as dividend? 560.26 580.75 608.70 680.50 None of the above Suppose the firm uses its excess cash to buy back its stock. How many shares will you sell to have an after-tax amount equal to the after-tax amount you would have had if the firm had paid its excess cash as dividend? 560.26 580.75 608.70 680.50 None of the above