What is the range of the following set of temperatures: {−12∘C,−5∘C,−22∘C,−8∘C}\{-12^\circ\text{C}, -5^\circ\text{C}, -22^\circ\text{C}, -8^\circ\text{C}\}{−12∘C,−5∘C,−22∘C,−8∘C}?
−17∘C-17^\circ\text{C}−17∘C
17∘C17^\circ\text{C}17∘C
30∘C30^\circ\text{C}30∘C
14∘C14^\circ\text{C}14∘C