<s>[INST] Mobile, Alabama once was a major hub for the oil industry. Now, the industry is being pursued in other parts of the United States.
A. On the surface this appears to be true because Alabama contains large oil reserves.
B. Mobile, the former oil capital of the (Southeastern)2 United States, has experienced significant decline in recent years due to ecological concerns.
C. While it appears true on the surface because there was a one time boom in the Oil Industry, the area has not had any major oil reserves or oil industry leaders to sustain the industry.
D. Mobile was never a major hub for the Oil Industry even though it does possess some oil reserves.
Choice (A) is incorrect because it is factually incorrect. Alabama does not have large oil reserves and the industry has relocated more suitable climates.
Which of the choices offers the best explanation for why the oil industry declined in Mobile, Alabama despite the latter having once been a major hub?[/INST]