7. Linear programming assumes that all clements in the model (like the CM/ unit) are a known with certainty bunknown c predictable d unpredictable 8. Which of the following statements is true with respect to variable costs per unit: A. They will decrease as production increases within the relevant range B. They will increase as production decreases within the relevant range. 2 C. They will remain the same as production levels change within the relevant range, D. They will decrease as production decreases within the relevant range, 9. Which of the following statements is true with respect to total variable casts? A. They will remain the same as production levels change within the relevant range, B. They will decrease as production increases within the relevant range C. They will decrease as production decreases within the relevant range. D. They will increase as production decreases within the relevant range. 10. Which of the following statements is true with respect to total fixed costs! A. They will increase as production decreases within the relevant range, B. They will remain the same as production levels change within the relevant range C. They will decrease as production increases within the relevant range. D. They will decrease as production decreases within the relevant range 11. Within the relevant range, which of the following statements is true with respect to fixed costs per unit? A. They will increase as production increases. B. They will decrease as production decreases C. They will increase as production decreases D. They will remain the same as production levels change