The existence of polluting industries near schools does not lead to a decrease in the air quality at those schools. Proof of this is shown at middle school X in southern California, where an oil well was built on middle school X' s campus. The air quality at middle school X is no worse than the air quality at other middle schools in the state, and the students at middle school X do not suffer more frequently from air pollution-related allergies than do students in other middle schools in the state. Each of the following statements, if true, weakens the argument EXCEPT:
A: More animal and plant life thrive near middle school X than at other middle schools in the state.
B: More students at middle school X suffer from allergies, commonly known to be caused by air pollution, than students at middle schools not located near pollution sources.
C: Middle school X, located near the oil well, is also farther from major highways and other sources of air pollution than the other middle schools in the state.
D: Prior to the oil well being built near middle school X, the air quality at middle school X was marginally better than the air quality of other middle schools in the state.
Choose A, B, C or D as your solution.
A