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Which sentence does not contain any errors in comma usage?

AVanessa whom you don't know, will ride on a float in the parade.
BBobby Thompson, whose middle name is Herbert, lives three doors away from us.
CMrs. Fanelli whom we know from our neighborhood can fly airplanes.
DA famous author, whose name escapes me right now will give a speech at the library.

Verified Answer :

B. Bobby Thompson, whose middle name is Herbert, lives three doors away from us.
This one is correct because you could read it as 
Bobby Thompson lives three doors away from us. As long as you can remove what's inside the commas and not ruin the sound of the sentence it's right