9% Question 7 (1 point) III Listen If a firm's before-tax cost of debt is 5% and the firm's tax rate is 30%, what would be its after-tax cost of debt? 1.5% 2.5% 3.5% 4.5% 31 O C # $ % & 3 4 5 6 7 8 9 0 e r t y d f h k O