The correct option is A Metals are good conductors of heat
Metals are good conductors of heat, as they allow heat to pass through them easily. So, when a hot liquid like tea, is poured into a metal cup, the cup would get hotter quickly, and it could burn our hands. Hence, the cups are usually not made of metals. Instead, they are made up of porcelain or any other non-metal that is a poor conductor of heat.