WILL MARK BRAINLIEST (if there is an explanation:))
Given: Q = 7m + 3n, R = 11 - 2m, S = n + 5, and T = -m - 3n + 8.

Simplify R - [S + T].

A. m - 2n - 2
B. -m + 2n - 2
C. 3m - 4n + 14
D. -3m - 4n + 14