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.

The characteristic of national consumer price indexes which is most typically shared across major economies worldwide is:
Option A:the geographic areas covered in their surveys.
Option B:the weights they place on covered goods and services.
Option C:their use in the determination of macroeconomic policy.

Answer: C