At the beginning of the year, the balance in the Buildings account was $800,000. At the end of the year, the balance in the Buildings account was $1,600,000. During the year, a building was purchased for $1,500,000. This was the only purchase of buildings during the year. What was the cost of the building or buildings sold during the year? OA $0 O B. $1,500,000 O C. $700,000 O D. $800,000