There are three different producers whose MC curves are MCA=3+0.3Qs, MCB= 4+0.6Qs and MCC=1+0.1 Qs, where Q is measured in terms of 1000 units. If the price of tennis balls is $4 per container, can each of these producers stay in business? Explain why or why not. How much will each want to produce at this price?