啥意思

问题如下：

Which of the following is least likely to be required by the binomial option pricing model?

选项：

A.

Spot price

B.

Two possible prices one period later

C.

Actual probabilities of the up and down moves

解释：

C is correct. The actual probabilities of the up and down moves in the underlying do not appear in the binomial option pricing model, only the pseudo or “risk-neutral” probabilities. Both the spot price of the underlying and two possible prices one period later are required by the binomial option pricing model.