Which of the following statement is least likely correct A speculative:（）

A. stock is usually under priced.

B. company has highly risky assets.

C. stocks have a slight probability of an enormous return.

从所给的四个选项中，选择最合适的一个填入问号处，使之呈现一定的规律性。（）

A.A

B.B

C.C

D.D