Rewrite the system of inequalities, adding slack variables or subtracting surplus variables as needed.x1 + x2 + x3 ? 41x1 + x2 + x3 ? 25x1 + x2 ? 20
A. x1 + x2 + x3 + s1 = 41
x1 + x2 + x3 + s2 = 25
x1 + x2 + s3 = 20
B. x1 + x2 + x3 + s1 = 41
x1 + x2 + x3 - s2 = 25
x1 + x2 - s3 = 20
C. x1 + x2 + x3 - s1 = 41
x1 + x2 + x3 + s2 = 25
x1 + x2 + s3 = 20
D. x1 + x2 + x3 - s1 = 41
x1 + x2 + x3 - s2 = 25
x1 + x2 - s3 = 20
Answer: B
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