当然，要想在到期前真正有利可图，该股票的交易价格必须高于58 1/2，也就是期权溢价（8-1/2）加上商定价格50。

To be profitable, though, at expiration, the stock must be trading for more than 58, the total of the option premium (8 1/2) and the strike price of 50.

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期权买方需要支付溢价购买时的选择，这是非常远低于股票的价格。

Option buyer need to pay a premium when buying options, which is very much less than the stock prices.

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如果在3个月内平均的风险溢价上升超过了执行价，期权的收益可以抵消高出来的利息支付。

If the average risk premium rises above the strike rate in three months, the higher interest payments will be offset by gains from the option.

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