A Nichrome Wire Is Used as a Heating Element in a Toaster

A Nichrome wire is used as a heating element in a toaster. From the moment the toaster is first turned on to the moment the wire reaches it maximum temperature, the current in the wire drops by 20% from its initial value. What is the temperature change in the wire? The temperature coefficient for Nichrome is α = 0.0004 (°C) ^-1.

A) 200°C
B) 400°C
C) 500°C
D) 100°C
E) 300°C