German silver contains: 

German silver contains these metals: Copper, Zinc, and Nickel. It is an alloy containing approximately $50\%$ Copper, $19\%$ Zinc, and $30\%$ Nickel.

German silver refers to various copper, zinc, and nickel alloys that may also contain lead and tin. They were named for their silver-white color, but the term silver is now prohibited for alloys that do not contain that metal. German silver varies in composition, with the percentages of the three elements roughly ranging as follows: Copper increased from 50% to 61.6%; zinc increased from 19% to 17.2%; and nickel increased from 30% to 21.1%.

The alloy is found to be silvery-white in color. 

Hence option (C) is correct.