Suppose that the total profit in hundreds of dollars from selling x items is given by P(x)=2x²-7x+7. Complete parts a through d below. $9 per item b. Find the average rate of change of profit as x changes from 3 to 4. $7 per item c. Find and interpret the instantaneous rate of change of profit with respect to the number of items produced when x-3. (This number is called the marginal profit at x-3) per item What does this result mean? Choose the correct answer below OA. When 3 iteps are sold, the profit is increasing at the rate of $ per item. Question Viewer B. When 3 itet. C. When items are sold for $ OD. When items are sold for $ profit is decreasing at the rate of $ per item. the profit is decreasing at the rate of $3 per item. the profit is increasing at the rate of $3 per item. d. Find the marginal profit at x=5. per item. Time Reme