Explanation

German Silver is typically an alloy of Copper and Nickel with Zinc added for color. Option A (Zn + Ni) is incorrect because it misses the primary copper component. Option B (Cu + Zn) is incorrect as it omits nickel. Option C (Cu + Ni) is incorrect because German Silver usually includes zinc in its composition. Option D (Cu + Sn) is incorrect as tin is not the main alloying element.