GRE Logical Reading: ETS-GRE逻辑单题ETS - 85C2KK46M6W4ELNAJ$

Which of the following most logically completes the argument? A. including delays for mechanical reasons in calculating the airline rankings for on-time performance would have had little, if any, effect on last year's rankings B. airlines would work harder to reduce delays if delays for mechanical reasons were included in the determination of on-time performance rankings C. the agency's rankings do not give consumers an accurate idea of how a given airline compares to other airlines with respect to the percentage of flights delayed last year D. those airlines with the best on-time performance record last year also had the greatest number of delays for mechanical reasons E. on-time performance was approximately the same for all domestic airlines last year