At the Same Time Each Day, a Researcher Records the Temperature

Multiple Choice

At the same time each day, a researcher records the temperature in each of three classrooms. The table shows the temperatures in degrees Fahrenheit recorded for one week.
How are the analysis of variance results affected if the same constant is added to every one of the original sample values?

A) The test statistic increases by the value of the constant.
B) The test statistic increases by a factor of the constant.
C) The test statistic is divided by the value of the constant.
D) The results are not affected.