Given the Following Linear Programming Problem That Minimizes Cost

Multiple Choice

Given the following linear programming problem that minimizes cost:
Min Z = 2x + 8y
Subject to (1) 8x + 4y ? 64
      (2) 2x + 4y ? 32
      (3) y ? 2
-What is the sensitivity range for the cost of x?

A) 0 to 2
B) 4 to 6
C) 2 to 4
D) 0 to 4