老师，请问这道题有12次方的用计算器怎么摁？

问题如下：

The nominal (quoted) annual interest rate on an automobile loan is 10%. The effective annual rate of the loan is 10.47%. The frequency of compounding periods per year for the loan is closest to:

选项：

A.weekly. B.monthly. C.quarterly.

解释：

The effective annual return is: EAR = (1 + Periodic interest rate)^m -1 For weekly compounding, (1 + 0.10 / 52)⁵² — 1 = 0.10506 = 10.50%

For monthly compounding, (1 + 0.10 / 12) ¹² — 1 = 0.10471 = 10.47%

For quarterly compounding, (1 + 0.10 / 4)⁴ — 1 = 0.10381 = 10.38% Thus, the correct answer is monthly compounding.