Bobby is in business as a market stallholder. He has not kept full accounting records. His statement of affairs at 1 April 2014 showed his capital was $86 000; his statement of affairs at 31 March 2015, however, showed his capital was $106,000. During the year his drawings were $28 000 and he introduced $24 000 as extra capital.

What was his profit for the year?

A. $16,000

B. $20,000

C. $24,000

D. $28,000