Consider the graph below. Suppose qMC $=500,$ pMC $=$ $$20,$ and ATC $=$ $$20$ at $500$ units. Is the profit$-$maximizing firm in monopolistic competition making a profit or loss, and by how much?a$.)$$$10,000$ profitb.$)$$$1,000$ profitc.$)$Zero economic profit, or normal profitd.$)$$$5,000$ profit