113.    An option portfolio exhibits high unfavorable sensitivity to increases in implied
        volatility and while experiencing significant daily losses with the passage of time.
        Which strategy would the trader most likely employ to hedge his portfolio?

        a.     Sell short dated options and buy long dated options.

        b.     Buy short dated options and sell long dated options.

        c.     Sell short dated options and sell long dated options.

        d.     Buy short dated options and buy long dated options.

我看了下答案不是太明白，有谁能帮忙解释一下吗？谢谢