The heating element in an electric kettle is usually located near the bottom of the kettle because

• A water is a good conductor of heat
• B heat can be more quickly radiated to all parts of the water
• C no heat can be lost to the surroundings
• D the convectional currents which are set up can carry heat to all parts of the water
• E the molecules of the heating element can carry heat to all parts of the water.