1. Solve the following problem using graphical linear programming

   Objective: Minimize Z=8X1 +12 X2

   Subject to:

   Subjective 1: 5X1 +2 X2 20

   Subjective 2: 3X1 +3 X2 21

   Subjective 3: X1 + 3 X2 9

   What are the values of slack/surplus variables?

   	A.	for subjective 1: slack = 20 for subjective 2: slack = 21 for subjective 3: slack = 9
   	B.	for subjective 1: slack = 9 for subjective 2: Surplus = 0 for subjective 3: Surplus = 0
   	C.	for subjective 1: Surplus = 9 for subjective 2: Surplus = 0 for subjective 3: Surplus = 0
   	D.	for subjective 1: Surplus = 12 for subjective 2: Surplus = 0 for subjective 3: Surplus = 0