Consider two identical Residences: Residence A & Residence B. Both are located in the United States. All things are identical in both buildings, i.e. Gross Square Footage (GSF), the number of bedrooms, the Heat Recovery Ventilator's Efficiency Rating, Interior Setpoint Temperature. Ventilation Calculations were done on both buildings for the purpose of System Sizing a Heating System. qvent for Residence A amounts to HALF of qvent for Residence B. What can be inferred? Select one or more: a. Residence A is located in a Climate Zone with lower Design Temperature. b. Information on the Volume of the building's must be included to determine a response. c. The insulation qualities of Residence A's envelope are superior. d. Natural Air Changes per Hour (ACHnat) is less in Residence A. e. Design Temperature is half the value for Residence A