Calculate the expected returns in dollars for the following assets:

a. A single painting that increased in value from $200,000 to $250,000 over the course of one year.

b. A rare bottle of wine, Domaine de la Romanee-Conti 2011, which rose in price from $255 to $275 between 2013 and 2014.

c. A 10,000 deposit held in a London bank for one year when the interest rate in pounds is 10% and the $/ exchange rate changes from 1.50 per pound to 1.38 per pound.