Neil tried to rewrite the expression \dfrac{5^{-6}} {5^{-4}} 5 −4 5 −6 start fraction, 5, start superscript, minus, 6, end superscript, divided by, 5, start superscript, minus, 4, end superscript, end fraction. \begin{aligned} &\phantom{=}\dfrac{5^{-6}} {5^{-4}} &=5^{-6-(-4)}&\text{Step } 1 &=5^{-2}&\text{Step } 2 &=\dfrac{1}{5^2}&\text{Step } 3 \end{aligned} = 5 −4 5 −6 =5 −6−(−4) =5 −2 = 5 2 1 Step 1 Step 2 Step 3 Did Neil make a mistake? If so, in which step? Choose 1