Solve the system of equations using Cramer's Rule if it is applicable. If Cramer's Rule is not applicable, say so.
A. x = 9, y = 6, z = 2; (9, 6, 2)
B. x = 10, y = 4, z = 2; (10, 4, 2)
C. x = 6, y = 2, z = 6; (6, 2, 6)
D. x = 9, y = -6, z = -2; (9, -6, -2)
Answer: A
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