Question 6 to Question 8 are based on this problem: Solve the following LP model graphically. Min: 4X1+5X2 Subject to: 2X1+3212041+22160X1+X240X1,X20 Which of the following statement is true? A. To plot the constraint of 21+32120 at equality, we need to connect point (30,0) and point (0,20). B. To plot the constraint of 21+32120 at equality, we need to connect point (40,0) and point (0,60). C. To plot the constraint of 41+2X2160 at equality, we need to connect point (40,0) and point (0,80). D. To plot the constraint of X1+X240 at equality, we need to connect point (20,0) and point (0,20)