The resistance of a copper wire at ice point is 50 Ω and 100 Ω at steam point, and the resistance of wire is 70 Ω the room temperature would be

The resistance of a copper wire at ice point is 50 Ω and 100 Ω at st

1.	The resistance of a copper wire at ice point is 50 Ω and 100 Ω at steam point, and the resistance of wire is 70 Ω the room temperature would be
A.	20 °C
B.	10 °C
C.	40 °C
D.	30 °C
Answer» D. 30 °C