Zinc forms two important alloys,$(i)$ Brass and $(ii)$ German silver. Metals present in them mainly are

• A
  In $(i)$ zinc and tin; and in $(ii)$ zinc,silver and nickel
• B
  In $(i)$ zinc and iron; and in $(ii)$ zinc,nickel and cobalt
• C
  In $(i)$ zinc and copper; and in $(ii)$ zinc,copper and nickel
• D
  In $(i)$ zinc and aluminium; and in $(ii)$ zinc,nickel and aluminium