On January 1, 2010, Gaoyu Co. purchased a land by $25,000 cash. No other transactions have occurred since then. On Dec 15, 2018, if Gaoyu were to sell its land, Gaoyu would receive $45,000. Gaoyu decided to keep the land and did not sell it. The amount that should be reported for land on the 2018 Gaoyu's balance sheet is:

a) 45000

b) 40000

c) 0

d) 25000