Question

three people are installing equipment. cyrus is installing a heating system. aletta is installing a cooling system, and francis is installing a cooling system.
which best describes the possible equipment they could install?
cyrus is installing an air conditioner, aletta is installing a furnace, and francis is installing a heat engine
cyrus is installing a furnace, aletta is installing a heat pump, and francis is installing an air conditioner.
cyrus is installing a heat pump, aletta is installing a thermostat, and francis is installing a furnace.
cyrus is installing a thermostat, aletta is installing an air conditioner, and francis is installing a heat engine.

Explanation:

Step1: Analyze each option

• Option 1: Air - conditioner is for cooling (not heating as Cyrus' task), furnace is for heating (not cooling as Aletta's task).
• Option 2: Furnace is for heating (Cyrus' task), heat - pump can be used for both heating and cooling but here Aletta is installing a cooling system (heat - pump is not the best fit for cooling in a simple sense), air - conditioner is for cooling (Francis' task).
• Option 3: Furnace is for heating (Cyrus' task), air - conditioner is for cooling (Aletta's task), heat - engine is not relevant for the given tasks.
• Option 4: Furnace is for heating (Cyrus' task), heat - pump is not mainly for cooling in a basic sense, air - conditioner is for cooling (Francis' task).

Answer:

Cyrus is installing a furnace, Aletta is installing a heat pump, and Francis is installing an air conditioner.