He should stay open because shutting down would be more expensive as descibed below
Step-by-step explanation:
It should be OPTION C-stay open because shutting down would be more expensive.
It cannot be option one. Shut down point is that where the variable cost is equal to the total revenue. But here the total revenue is more than the variable cost.
It cannot be option two. If the firm exit the industry, there will not be any revenue and variable cost but the total fixed cost will a loss. Hence, the firm should continue to produce.
It cannot be option four. There is not at all any economic profit. Rather there is an economic loss of 60000.
Hence, the answer will be option three. He should stay open because shutting down would be more expensive.