Final answer:
A Type B vent with a listed cap of 14 inches should terminate at least 3 feet higher than any portion of a building within 10 feet.
Step-by-step explanation:
In accordance with the guidelines, a Type B vent with a listed cap of 14 inches should terminate at least 3 feet higher than any portion of a building within 10 feet. This is to ensure proper ventilation and prevent gases from entering the building. The height requirement is based on the principle of maintaining a sufficient vertical clearance to prevent obstruction and allow for proper dispersal of exhaust gases.