Which sentence correctly uses commas? A. While waiting in the office, I read an article about South America. B. While, waiting in the office I read an article about South America. C. While waiting in the office, I, read an article about South America. - Comma | English Grammar Quiz

Which sentence correctly uses commas?

A. While waiting in the office, I read an article about South America.
B. While, waiting in the office I read an article about South America.
C. While waiting in the office, I, read an article about South America.

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