​The main reason(s) firms in a competitive market cannot earn positive profits in the long run is(are)

A) ​assets can quickly move in and out of the industry when demand fluctuates
B) an increase in demand leads to entry of firms which absorb the extra demand
C) a decrease in demand leads to exit of firms from the market such that there is no surplus
D) ​all of the above

Identify which of the following items would appear on a balance sheet.
(a)Cash
(b)Fees earned
(c)Joe Brown, capital
(d)Wages payable
(e)Rent expense
(f)Prepaid advertising
(g)Land