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 is most accurate? An interbank offered rate:
Option A:is a single reference rate.
Option B:applies to borrowing periods of up to 10 years.
Option C:is used as a reference rate for interest rate swaps.

Answer: C