What are the chemical contains in electrolyte used for dull nickel plating?

A. Nickel chloride, Boric acid and Ammonium sulphate

B. Boric acid, Nickel sulphate and Ammonium chloride

C. Dilute sulphuric acid, Hydro chloric acid and Boric acid

D. Nickel sulphate, Sulphuric acid and Hydrochloride

Correct Answer: Nickel chloride, Boric acid and Ammonium sulphate