Saul Vargas purchases an old apartment building in downtown Miami at a cost of $100,000 (land worth $15,000) which he substantially rehabilitates and rents to low-income individuals. He currently rents 80 percent of the apartments to qualified low-income tenants. What is Saul's low-income housing credit for the year assuming he meets all the requirements? a. $9,000 b. $7,650 C. $6,840 d. $6,120 e. None of the above