please solve it in 15 mins I will thumb you up please fast

A firm's optimal capital structure is defined as the mixture of debt and equity that maximize its share price. i. Discuss the main characteristics of debt and equity, and its impact on a firm's operation and ownership structure. ii. Discuss the M\&M Theory on Capital Structure. iii. Discuss how a firm's Capital Structure impacts its Weighted Average Cost of Capital (WACC)