Dat 2010 Destroyer ochem #47

[jirotrom]

Ok... so when I answered this question I picked A) as the most stable radical... but the answer is E which would have been my second choice. Is it E because you can have resonance? A seems locked in place so its not "free"... please correct me if i am wrong or further clarify

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[rjnst7]

A is a carbocation instead of a free radical like the question asked for....I made the same mistake