Airport administrator: According to the latest figures, less than 1 commercial flight in 2 million strays off course while landing, a number low enough to allow runways to be built closer together without a significant increase in risk. Opponents of closer runways claim that the number is closer to 1 in 20, 000, but this figure is based on a partial review of air traffic control tapes and so is relatively unreliable compared to the other figure, which is based on a thorough study of the flight reports required of pilots for all commercial flights. Which one of the following most accurately describes a flaw in the airport administrator's argument?
A: The argument questions the integrity of those who are opposed to allowing runways to be built closer together.
B: The argument presumes, without providing justification, that the air traffic control tapes studied do not provide accurate information concerning specific flights.
C: The argument overlooks the fact that those who make mistakes are often unreliable sources of information about those mistakes.
D: The argument presumes, without providing justification, that building runways closer together will encourage pilots to be more cautious while landing.
Choose A, B, C or D as your solution.
C