D
Principle: If one does not criticize a form of behavior in oneself or vow to stop it, then one should not criticize that form of behavior in another. Application: If Shimada does not vow to stop being tardy himself, he should not criticize McFeney for tardiness. Which one of the following, if true, justifies the above application of the principle?
A: Shimada criticizes McFeney for regularly being tardy, but also criticizes himself for occasional tardiness.
B: Neither McFeney nor Shimada is regularly tardy, but Shimada criticizes McFeney for tardiness nonetheless.
C: McFeney often criticizes Shimada for being tardy, but neither Shimada nor McFeney ever vows to cease being tardy.
D: Both McFeney and Shimada are regularly tardy, but Shimada criticizes McFeney's tardiness without criticizing his own.