Which of the following statements is correct? Group of answer choices I

f a company's tax rate increases, then, all else equal, its weighted average cost of capital will decline.

WACC calculations should be based on the before-tax costs of all the individual capital components.

A change in a company's target capital structure cannot affect its WACC. An increase in the risk-free rate will normally lower the marginal costs of both debt and equity financing.

Flotation costs associated with issuing new common stock normally reduce the WACC.