Solve the system.3w + 4x - 2y + z = -8-w + x + 4y - z = 154w - x + y + 4z = 5 w + x + 3y - z = 15
A. (2, -2, -4, -2)
B. (-2, -1, 4, -4)
C. (4, 1, 2, -4)
D. (2, -1, 4, -2)
Answer: D
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A. 
B. - 
C. - 
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