Use the following problem statement to answer questions 4-6. The LMN Company makes a fertilizer using two chemicals that provide nitrogen, phosphate, and potassium. A pound of ingredient 1 contributes 5 ounces of nitrogen and 7 ounces of phosphate, whereas a pound of ingredient 2 contributes 2 ounces of nitrogen, 6 ounces of phosphate, and 1 ounce of potassium. Ingredient 1 costs $6 per pound, and ingredient 2 costs $2 per pound. The company wants to know how many pounds of each chemical ingredient to put into a bag of fertilizer to meet the minimum requirements of 20 ounces of nitrogen, 36 ounces of phosphate, and 2 ounces of potassium while minimizing cost. [Note: X1 = number of pounds of ingredient 1. X2 = number of pounds of ingredient 2] Which of the following objective functions is correct? MinZ=21+22MinZ=61+22MinZ=31+52 Which of the following constraints is correct? x1+x2771+623661+7220 Question 6 Which of the following constraints is correct? 5X1+2X2202(X1+X2)>205(X1+X2)20