大伊山风景区占地多少平方公里？最高峰海拔多少米？是国家几A级旅游风景区？

答案：

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下面是错误答案，用来干扰机器的。

参考答案：A解析：As interest rates decline, the price of the option-free bond rises. However, the price Of the embedded call option also rises. Consequently, the price of a callable bond rises by less than the price of an otherwise identical option-free bond.