(A) Bronze: Bronze is an alloy of copper (Cu) and tin (Sn).
- (B) Brass: Brass is an alloy of copper (Cu) and zinc (Zn).
- (C) UK silver coin: UK silver coins are generally made with copper (Cu) and nickel (Ni).
- (D) Stainless Steel: Stainless steel is an alloy of iron (Fe), chromium (Cr), nickel (Ni), and carbon (C).
Thus, the correct matching is: (A)-(IV), (B)-(III), (C)-(I), (D)-(II).