The augmented matrix is given for a system of equations. If the system is consistent, find the general solution. Otherwise state that there is no solution. 
A. x1 = 15 + 11x3
x2 = -5 - 4x3
x3 is free
B. x1 = 5 - 2x2 + 3x3
x2 is free
x3 is free
C. x1 = 5 -2x2 + 3x3
x2 = -5 - 4x3
x3 is free
D. x1 = 15 + 11x3
x2 = -5 - 4x3
x3 = 0
Answer: A
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