Which of the following statements is CORRECT?a. When calculating the cost of a preferred stock, a company needs to adjust for taxes, because preferred stock dividends are deductible by the paying corporation. b. All else equal, an increase in a company's stock price will increase its marginal cost of retained earnings, rs. c. All else equal, an increase in a company's stock price will increase its marginal cost of new common equity, re. d. Since the money is readily available, the after-tax cost of retained earnings is usually much lower than the after-tax cost of debt. e. 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.

Wo firms, a and b, each currently dump 50 tons of chemicals into the local river. the government has decided to reduce the pollution and from now on will require a pollution permit for each ton of pollution dumped into the river. it costs firm a $100 for each ton of pollution that it eliminates before it reaches the river, and it costs firm b $50 for each ton of pollution that it eliminates before it reaches the river. the government gives each firm 20 pollution permits. government officials are not sure whether to allow the firms to buy or sell the pollution permits to each other. what is the total cost of reducing pollution if firms are not allowed to buy and sell pollution permits from each other? what is the total cost of reducing pollution if the firms are allowed to buy and sell permits from each other? a. $3,000; $1,500 b. $4,500; $3,500 c. $4,500; $4,000 d. $4,500; $2,500