Choose the Answer Which Best Rewords the Italicized Portion

Choose the answer which best rewords the italicized portion. If you think the original wording is best, choose option A.
It can be drawn into wire or hammered out into sheets, it is often mixed with gold for "white gold" jewelry.

A) into sheets, it is often
B) into sheets it is often
C) into sheets; it is often
D) into sheets: it is often