The dot plots show the salaries for the employees at two small companies before a new company director is hired at each company. Which of the following statements must be true?

A.
The mean and median values of salaries shown in the dot plot for company 2 are the same.

B.
Company 1 has less variability in their salaries than company 2

C.
The median values of salaries shown in the dot plots for the two companies are about the same.

D.
The median value of salaries at company 2 will remain unchanged after a company director is hired to have a salary of 500 thousand dollars.