The figure given below shows three Short Run Average Total Cost (SRATC) curves and the Long Run Average Total Cost (LRATC) curve of a firm. Figure 8.3 Which of the following would account for the shape of the long-run average-total-cost curve in Figure 8.3? Group of answer choices Managerial problems Low productivity Administration overhead Low worker morale Specialization of laborShort run refers to a period of time during which: Group of answer choices the producer cannot change the level of output. some factors are fixed while some others are variable. all the factors are constant. all the factors are variable. the producer can shift from one plant size to another