Question

Which sentence does not contain any errors in comma usage?

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

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

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

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

Answer 1

i think its d

Answer 2

I think it is either B or C?

Answer 3

B,

Answer 4

You dont even need a coma for C

Answer 5

yeah you're right its B

Answer 6

:D