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.

Which of the following statements best portrays the full implementation of post-financial-crisis regulations in the OTC derivatives market?
Option A:Transactions are no longer private.
Option B:Most transactions need to be reported to regulators.
Option C:All transactions must be cleared through central clearing agencies.

Answer: B