The following table shows the average cost of producing various quantities of shirts given different plant sizes. Currently they are producing 200 shirts with plant size 3. If the company wants to reduce average costs, which of the following would accomplish this goal? Output AC - Plant 1 AC - Plant 2 AC - Plant 3 AC - Plant 4 100 7.00 9.00 8.00 11.20 200 9.00 8.00 7.00 10.00 300 13.00 7.00 6.40 9.00 400 19.00 8.00 5.60 8.60 Multiple choice question. Keeping the same plant size but decreasing production by 100 shirts. Keeping the same plant size but increasing production by 100 shirts. Keeping the same production level but increasing the size of the plant to 3. Keeping the same production level but decreasing the size of the plant to 1