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.

A beneficial opportunity created by the derivatives market is the ability to:
Option A:adjust risk exposures to desired levels.
Option B:generate returns proportional to movements in the underlying.
Option C:simultaneously take long positions in multiple highly liquid fixed-income securities.

Answer: A