The currents in an electrical network are given by the solutions of the system
where I1, I2, and I3 are measured in amperes. Solve the system of equations using matrices.
A. I1 = 2, I2 = 3, I3 = 1
B. I1 = 2, I2 = 1, I3 = 3
C. I1 = 4, I2 = 4, I3 = 9
D. I1 = 4, I2 = 4, I3 = 8
E. no solution
Answer: B
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