Constraint A $3 X_{1}+X_{2} \geq 90$ Constraint B $3 X_{1}+2 X_{2} \leq 120$

Multiple Choice

Constraint A: $3 X_{1}+X_{2} \geq 90$ Constraint B: $3 X_{1}+2 X_{2} \leq 120$ Constraint C: $X_{1}-X_{2} \geq 0$
All variables are required to be non-negative. Let the objective function be Max: $X_{1}+X_{2}$ The objective function value corresponding to the optimal solution will be

A) 48
B) 60
C) 50
D) 45
E) 90