Jackson Owns a Condominium in Las Vegas, Nevada, and He

Jackson owns a condominium in Las Vegas, Nevada, and he rents it to Joanne for $1,500 per month, payable on the 1^st of each month. While he was out of town in August, the condominium's air conditioning broke and Joann had it replaced for $1,350. How much rental income does Jackson report for September if Joanne deducts the repair cost from her rent for September?

A) $0.
B) $150.
C) $1,350.
D) $1,500.