The country of Aquilonia has a tax system identical to that of Canada. Suppose an Aquilonian bought a parcel of land for $10 000 in 1960 when the price index equalled 100. In 2013, the person sold the land for $100 000, and the price index equalled 500. If the person must pay 20 percent of any capital gain in taxes, what is the after-tax real capital gain (in 2013 dollars) on the land? Select one: O a. $62 000 O b. $72 000 O c. $6400 O d. $32 000 Clear my choice