The matrix associated with the solution to a system of linear equations in x, y, and z is given. Write the solution to the system, if it exists.
A. infinitely many solutions of the form x = -2 - 4z, y = 1 + 3z, z = z
B. infinitely many solutions of the form x = -2 - z, y = 1 + 3z, z = z
C. infinitely many solutions of the form x = -2 - 4z, y = 1 + z, z = z
D. infinitely many solutions of the form x = 1 + 3z, y = -2 - 4z, z = z
Answer: A
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A. 
- 4x - 12 ln
+ 
+ C
B. 
- 4x + 12 ln
+ 
+ C
C. 
- 4x + 6 ln
- 
+ C
D. 12 ln
+ 
- 
+ C
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