The box-and-whisker plot shows the average temperatures in Atlanta, Georgia in March.

box whisker plot

Which statement about the temperatures in Atlanta must be true?
A. About half of the days in March had average temperatures above 60 degrees.
B. About half of the days in March had average temperatures either below 60 or above 73 degrees.
C. The coldest day in March was 51 degrees.
D. The hottest day in March was 84 degrees.

B. About half of the days in March had average temperatures either below 60 or above 73 degrees.

Based on the given information, we cannot determine the exact values of the temperatures in Atlanta, Georgia in March. Therefore, we cannot definitively determine which statement about the temperatures must be true.