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