How would each of the following scenarios affect a firm's cost of debt rd(1-T), its cost of equity rs, and WACC? Indicate with a plus, minus, or zero if the factor would raise, lower or have an indeterminate effect.

a. corporate tax rate lowered

e. The firm doubles the amount of capital it raises during the year

g. The firm merges with another firm whose earnings are countercyclical both to those of the first firm and to the stock market.

j. The firm is an electric utility with a large investment in nuclear plants. Several states are considering a ban on nuclear power generation.