Context: Use the graph to answer the question below.
Which statement is true about the average monthly temperature in Lagos?
A. September, October, and November are much warmer than the other months of the year.
B. December, January, and February are the coldest months of the year.
C. The average monthly temperature does not change much throughout the year.
From the given choices, pick the correct answer and respond by indicating the letter of the correct option.

C