Payal,
In D, doesn't the past-perfect suggest that the action of "becoming" happened before the first game was played?
[quote="e-GMAT"]You are correct that Choice B is also correct. And that there should not be a comma after the subject in choice C. Actually, this question was modified and corrected back in August 2010 after we discovered this in our beta trials. However, it appears that accidentally incorrect version of the file got uploaded. We will upload the correct file right away!!
Just a minor note about Choice B and C in reference to the verb sequencing. Typically if the verb sequencing is clear with the use of other words in the sentence, then past perfect tense should not be used. In fact GMAT prefers the use of simple past tense in that case. However, this is just a preference and not really a deterministic error. In fact, in an official question, you will not find two choices (such as Choices B and D), with the use of simple past and past perfect as the only difference between the choices.
Thanks,
Payal[/quote]