GMAT Sentence Correction (SC) | Re: It was not long after the 1930s commenced that such baritone

It was not long after the 1930s commenced that such baritone singers as Bing Crosby and Russ Columbo contributed to the popularization of a type of romantic, soothing singing that came to be called “crooning.”

A. It was not long after the 1930s commenced that such baritone singers as Bing Crosby and Russ Columbo contributed to

Correct

B. Not long after the commencement of the decade of the 1930s, baritone singers such as Bing Crosby and also Russ Columbo decided to contribute in

Very