Answer:
Step-by-step explanation:
A) Energy can be both a fixed cost and a variable cost for a company. This is due to the sense that energy in the form of fixed electricity bill even when no production takes place (telephone bill), a fixed cost and electricity bill when production takes place would be a variable cost
B) An increment in fixed cost will shift the ATC curve to the right while the MC curve would remain the same because MC is the change in variable cost as output increases and is not related to fixed cost.
C) Corn cost is a variable cost for ethanol producer as each unit of corn is used to produce ethanol and thus use of corn is reliant upon how much ethanol is produced. This makes corn a variable input dependent on the production of output, therefore, the cost of corn is variable.
D) An increment in the variable cost will shift the ATC curve to the right and individual MC curve to the right.