2. After replacing his old gas water heater with a new, pilotless, gas water heater that is rated as highly efficient, Jimmy’s gas bills increased. Each of the following, if true, contributes to an explanation of the increase mentioned above EXCEPT:

Вариант ответа 1 - (A) The new water heater uses a smaller percentage of the gas used by Jimmy’s household than did the old one.

Вариант ответа 2 - (B) Shortly after the new water heater was installed, Jimmy’s uncle came to live with him, doubling the size of the household.

Вариант ответа 3 - (C) After having done his laundry at a laundromat, Jimmy bought and started using a gas dryer when he replaced his water heater.

Вариант ответа 4 - (D) Jimmy’s utility company raised the rates for gas consumption following installation of the new water heater.

Вариант ответа 5 - (E) Unusually cold weather following installation of the new water heater resulted in heavy gas usage.