Please HELP!
Which sentence does not contain any errors in comma usage?

A.
The Chinese kept the formula to themselves, but, in 751 the Arabs learned the Chinese secret.

B.
Some papermakers used rags, and others used animal hides.

C.
The inventor gathered bark and rags and then he or she made a pulp.

D.
A paper mill eventually opened in Spain and, the art of making paper spread from there.

Question

Please HELP!
Which sentence does not contain any errors in comma usage?
 
 A.
The Chinese kept the formula to themselves, but, in 751 the Arabs learned the Chinese secret.
 
 B.
Some papermakers used rags, and others used animal hides.
 
 C.
The inventor gathered bark and rags and then he or she made a pulp.
 
 D.
A paper mill eventually opened in Spain and, the art of making paper spread from there.

anonymous · Answer

nvm it was B

anonymous · Answer

OK i was about to give a whole speech on commas but you saved me the trouble. :d