College

What is the value of \( q \) in the equation \( q - 7.1 = 8.3 \) and why?

A. 15.4, because to isolate \( q \), you would add 7.1 to 8.3.

B. 1.2, because to isolate \( q \), you would subtract 7.1 from 8.3.

C. -1.2, because 7.1 - 8.3 = -1.2.

D. -15.4, because -7.1 - 8.3 = -15.4.