A Private Sector, Not-For-Profit Hospital Received a Pledge of $150,000

A private sector, not-for-profit hospital received a pledge of $150,000 in 2016 to be used for a building to be constructed in 2017 but contingent on the hospital being able to raise an equivalent amount from other donors. As of the end of 2016, two-thirds of the amount had been raised from other donors. In 2017, the hospital raised the remaining amount from other donors. The donor gave the $150,000 to the hospital in 2017 and the building was completed in 2018. In which year should the hospital recognize the $150,000 from the pledge?

A) $100,000 in 2016 and $50,000 in 2017.
B) $100,000 in 2017 and $50,000 in 2018.
C) $150,000 in 2018 .
D) $150,000 in 2017.