Question

i will give medal
Which sentence does not contain any errors in comma usage?

A.
In China people first wrote on silk, but then someone invented paper.

B.
In China people first wrote on silk, but, then someone invented paper.

C.
In China people first wrote on silk but then someone invented paper.

D.
In China people first wrote on silk but, then someone invented paper.

Answer 1

Any ideas?

Answer 2

What do you think? Btw Hey @BlossomCake!! XD

Answer 3

Hey! XD

Answer 4

i think maybe a or c

Answer 5

A. is the correct answer. :)

Answer 6

thanks

Answer 7

No problem. ^_^