Which of the following statements is CORRECT?

If a company's tax rate increases but the YTM on its noncallable bonds remains the same, the after$-$tax cost of its debt will fall.

All else equal, an increase in a company's stock price will increase its marginal cost of new common equity, re$-$

When calculating the cost of preferred stock, a company needs to adjust for taxes, because preferred stock dividends are deductible by the paying corporation.

All else equal, an incresse in a company's stock price will increase its marginal cost of retained carnings, rs