A Platinum Wire Is Used to Determine the Melting Point

A platinum wire is used to determine the melting point of indium. The resistance of the platinum wire is 2.000 Ω at 20°C and increases to 3.072 Ω as the indium starts to melt. What is the melting point of indium? The temperature coefficient of resistivity for platinum is 3.9 × 10^-3(C°) ^-1.

A) 120°C
B) 140°C
C) 160°C
D) 240°C
E) 350°C