What happens to a company's weighted average cost of capital (WACC) if the firm's corporate tax rate increases and if the Federal Reserve causes an increase in the risk-free rate, respectively? (Consider the events independently and assume a beta of less than one.) Please select the correct option?

	Tax rate increase	Increase in risk-free rate
A	Decrease WACC	Increase WACC
B	Decrease WACC	Decrease WACC
C	Increase WACC	Increase WACC