A is an accrual basis taxpayer. A sells services that are delivered on a monthly basis. On May 1, 2016 A enters into the following agreements. Agreement that runs until January 31, 2017 for $18,000 and another that runs until December 31, 2017 for $35,000. The fees are earned evenly each month. A receives $53,000 in 2016. How much income does A have to recognize in 2016? Would the answer be different if A was renting apartments in a building?

Please show me the detailed explanation, thanks.