Note that: 0 celsius = 32 farenheit
0 farenheit = -17.78 (rounded) celsius
5/9 = 0.56 (rounded)
1. only is your answer
hope this helps
C=5/9(F-32)
1 deg. change in F = 5/9 deg. change in C so I is true
1 deg. change in C = 9/5 or 1.8 deg. change in F so II is also true
III is false
so correct ans is D
