British Sterling Silver Is a Copper-Silver Alloy That Is 7

British sterling silver is a copper-silver alloy that is 7.5% copper by weight. How many grams of pure copper and how many grams of British sterling silver should be used to prepare 226 grams of a copper-silver alloy that is 13% copper by weight?

A) 192.4 g of British sterling silver and 33.6 g of copper.
B) 196.6 g of British sterling silver and 29.4 g of copper.
C) 206.5 g of British sterling silver and 19.5 g of copper.
D) 213.9 g of British sterling silver and 12.1 g of copper.
E) 212.6 g of British sterling silver and 13.4 g of copper.