The connecting cable of electrical appliances like electric iron, water heater or room heater contains three insulated copper wires of three different colours-red, green and black. Which one of the following is the correct colour code?

• A. Red-live wire, Green-neutral wire, Black-ground wire
• B. Red-neutral wire, Green-ground wire, Black-live wire
• C. Red-live wire, Green-ground wire, Black-neutral wire
• D. Red-ground wire, Green-live wire, Black-neutral wire