请各位大神指教：

1. MOCK 里有个题目说 Get US risk free rate by shorting european stock market future, selling euros, and buying US dollars (concerned Europe's sovereign debt crisis may lead to volatility in European stock markets and euro currency)

2. 2013 Mock第38题， 求required interest rate swap's notional principal. 我不懂为什么选第三个swap

感谢！