Please explain the graph and the paragraph under the graph , it says that the total cost curve were steeper and were not steeper, please explain it?as well?

A, - 5, s: E q. |-.. 4:. III 100 1 75 200 ------ o _____1._____ Economic prot (/wk) 100 FIGURE 13.4 Total Cost, Revenue and Prot Curves for a Monopolist Economic prot (11(Q) in the bottom panel) is the vertical distance between total revenue and total cost (TR and TC in the top panel). Note that the maximum- profit point, Q\" = 175, lies to the left of the output level at which TR is at a maximum (Q = 200). Notice in EiguLLLlA that the vertical distance between the short-run total cost and total revenue curves is greatest when the two curves are parallel (when Q = 175). Suppose this were not the case. For example, suppose that at the maximum-prot point the total cost curve were steeper than the total revenue curve. It would then be possible to earn higher prots by producing less output, because costs would go down by more than the corresponding reduction in total revenue. Conversely, if the total cost curve were less steep than the total revenue curve, the monopolist could earn higher prots by expanding output, because total revenue would go up by more than total cost