The correct option is D 0.0111∘C−1
According to formula for temperature dependence resistance Rt=R0(1+αΔt)
Here, Rt is the resistance at given temperature = 5 Ω
R0 is the resistance at reference temperature = 3 Ω
Δt is change in temperature i.e.=100−40=60∘C
and α is temperature coefficient
Now above equation will become,
5=3(1+α60)
α=0.0111∘C−1