Given a text T, and several options, according to the question posed in the text T to choose the most appropriate option from the options as the answer, please directly output the most appropriate option, do not need to output the explanation.

Based on the binomial model, an increase in the actual probability of an upward move in the underlying will result in the option price:
Option A:decreasing.
Option B:remaining the same.
Option C:increasing.

Answer: B