有两道题不会，忘高人解答一下，感激不尽~~~

1，According to new classical economists, is financing a reduction in current taxes by
government borrowing likely to result in an increase in:
aggregate demand?              the real interest rate?
A. No                                      No
B. No                                      Yes
C. Yes                                    No
D. Yes                                    Yes

2，The following information applies to a company’s preferred stock:
• Current price $47.00 per share
• Par value $50.00 per share
• Annual dividend $3.50 per share
If the company’s marginal corporate tax rate is 34 percent, the after-tax cost of preferred
stock is closest to:
A. 4.62%.
B. 4.91%.
C. 7.00%.
D. 7.45%.

第一题不知道什么意思，第二题不会算。。。。。