农民专业合作社设立时自愿成为该社成员的人为（）。

A.创始人

B.设立人

C.召集人

D.代表人

Despite the approach of winter, oil prices to industrial customers are exceptionally low this year and likely to remain so. Therefore, unless the winter is especially severe, the price of natural gas to industrial customers is also likely to remain low.
Which of the following, if true, provides the most support for the conclusion above

A．Long-term weather forecasts predict a mild winter.

B．The industrial users who consume most natural gas can quickly and cheaply switch to using oil instead.

C．The largest sources of supply for both oil and natural gas are in subtropical regions unlikely to be affected by winter weather.

D．The fuel requirements of industrial users of natural gas are not seriously affected by the weather.

E．(E) Oil distribution is more likely to be affected by severe winter weather than is the distribution of natural gas.