Please help on this one

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Please help on this one

by gauravpokhriyal » Wed Jul 01, 2015 10:05 pm
4. Moule's review served as a welcome encouragement to the author: Hardy set to work with renewed vigor and finished the serial ahead of time.

A. served as a welcome encouragement to the author: Hardy
B. served a welcome encouragement to Hardy, and the author
C. was welcome as an encouragement to Hardy, the author
D. was a welcome encouragement to the author, Hardy
E. served as a welcome encouragement to the author, Hardy

OA:

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by theCEO » Fri Jul 03, 2015 7:50 pm
gauravpokhriyal wrote:4. Moule's review served as a welcome encouragement to the author: Hardy set to work with renewed vigor and finished the serial ahead of time.

A. served as a welcome encouragement to the author: Hardy
B. served a welcome encouragement to Hardy, and the author
C. was welcome as an encouragement to Hardy, the author
D. was a welcome encouragement to the author, Hardy
E. served as a welcome encouragement to the author, Hardy

OA:
the sentence contains 2 independent clauses which cannot be only joined with a comma. So c, d and e are wrong.

With "b", we aren't sure that Hardy is the author. Also "served a welcome" is not correct.

ans = a