以下有关类的继承的说明中，正确的是（）。
A. 子类既可直接继承父类所有的非私有属性，也可通过接口继承父类的私有属性
B. 子类只能继承父类的方法，不能继承父类的属性
C. 子类只能继承父类的非私有属性，不能继承父类的方法
D. 子类不能继承父类的私有属性
What is the most likely effect of an increase in volatility on the price of a: Call option? Put option?
A. Increase, Increase
B. Increase, Decrease
C. Decrease, Increase
Decrease, Decrease
Which statement best describes option price sensitivities? The value of a:
A. call option increases as interest rates rise.
B. put option decreases as interest rates decline.
C. put option increases as volatility decreases.
If the volatility of returns of an underlying security increases, then:
A. both call and put option prices increase.
B. both call and put option prices decrease.
C. call prices increase and put prices decrease.
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