Question

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

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

Hope this helps!