A house is maintained at steady state (closed system) at 300 K while the outside temperature is 280 K. The heat loss is measured at 2 kW. Two approaches are being considered: (A) electrical heating at 100% efficiency and (B) a heat pump that operates with a COP equal to 50% of the ideal value. The average daily price of electricity is $0.12/kWh. Determine the cost of options A and B over a 10 hour operating period.