A thermal expansion coefficient is 20×10−6 K−120 \times 10^{-6} \text{ K}^{-1}20×10−6 K−1. What is this value in ∘C−1^{\circ}\text{C}^{-1}∘C−1?
20×10−6 ∘C−120 \times 10^{-6} \text{ }^{\circ}\text{C}^{-1}20×10−6 ∘C−1
20×10−3 ∘C−120 \times 10^{-3} \text{ }^{\circ}\text{C}^{-1}20×10−3 ∘C−1
20×10−9 ∘C−120 \times 10^{-9} \text{ }^{\circ}\text{C}^{-1}20×10−9 ∘C−1
36×10−6 ∘C−136 \times 10^{-6} \text{ }^{\circ}\text{C}^{-1}36×10−6 ∘C−1