A 1-year American put option with an exercise price of ＄40 will be worth ＄10.00 at maturity with a probability of 0.25 and ＄0.00 with a probability of 0.75. The current stock price is ＄36.The discount rate is 5%. The optimal strategy is to:
A. Exercise the option because the payoff from exercise exceeds the present value of the expected future payoff.
B. Not exercise the option because the payoff from exercise is less than the discounted present value of the future payoff.
C. Exercise the option because it is currently at-the-money.
D. Not exercise the option because it is out-of-the-money.
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In what way is the payoff of a forward rate agreement most likely different from the payoff of an interest rate option? It is:
A. paid immediately when the contract expires.
B. based on a notional principal amount.
C. based on a fixed exercise rate.
以下程序有语法性错误，有关错误原因的正确说法是()void main(){int G=5,k;void prt_char();… …k=prt_char(G);… …}
A. 语句void prt_char();有错，它是函数调用语句，不能用void说明
B. 变量名不能使用大写字母
C. 函数说明和函数调用语句不一致
D. 函数名不能使用下划线
有两个字符数组a、b，则以下正确的输入格式是（）
A. gets(a,b);
B. scanf(“%s%s”,a,b);
C. scanf(“%s%s”,&a,&b);
D. gets(“a”),get(“b”);
以下正确的说法是（）
A. 形参的类型说明可以放在函数体内
B. return后边的值不能为表达式
C. 如果函数值的类型与返回值类型不一致，以函数值类型为准
D. 如果形参与实参的类型不一致，以实参类型为准
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