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.

In contrast to contingent claims, forward commitments provide the:
Option A:right to buy or sell the underlying asset in the future.
Option B:obligation to buy or sell the underlying asset in the future.
Option C:promise to provide credit protection in the event of default.

Answer: B