Which of the following statements accurately describes the heat loads in buildings? a. For structures located at a latitude of 40 degrees north, the influence of the western sun typically causes buildings to experience their lowest block load at 4:00 pm. b. Windows generally contribute more to the heat load than walls and roofs. c. Due to their inherent properties, walls usually have the highest heat loads. d. The wall loads at 4:00 pm are of interest for their contribution to the peak load for the building e. Roof loads are typically the highest contributors to a building's heat load