Any help me out with these true and false pls much appreciated!!

Question 2 1 pts The cost of debt is less than the cost of equity on average. O False O True Question 3 1 pts The optimal capital structure minimizes the weighted average of the cost of debt and the cost of equity. O True O False Question 4 1 pts Because interest is a tax-deductible expense, the effective cost of debt is less than the stated rate of interest. O True O False