When a new commercial lease is signed, the tenant is responsible for operating expense increases over the base year. The base year operating expenses were $250,000 for the building. The tenant is leasing 6,800ft of a 48,000 sf building. At the end of the year, the actual operating expenses totaled $360,000. What is the pro-rata chargeback for this tenant? A. $7,500 B. $110,000 C. $51,000 D. $15,583