JEE Main 2018 Physics question

A heating element has a resistance of 100 Ω at room temperature. When it is connected to a supply of 220 V, a steady current of 2 A passes in it and temperature is 500°C more than room temperature. What is the temperature coefficient of resistance of the heating element ?

• (A) °C
• (B) °C
• (C) °CCorrect
• (D) °C