A Study of the Top MBA Programs Attempted to Predict $t = - 3.94$

A study of the top MBA programs attempted to predict the average starting salary (in $1000's) of graduates of the program based on the amount of tuition (in $1000's) charged by the program and the average GMAT score of the program's students. The results of a regression analysis based on a sample of 75 MBA programs is shown below: Least Squares Linear Regression of Salary

Identify the test statistic that should be used to test to determine if the amount of tuition charged by a program is a useful predictor of the average starting salary of the graduates of the program.
A) $t = - 3.94$
B) $\mathrm { t } = 4.36$
C) $t = 5.15$
D) $t = 20.67$