Correct Answer - C
It is clerar form the graph that lowest point for scale A is `30^(@)` and lowest point for scale B is `0^(@).` Highest point for the scale A is `180^(@)` and for scale B is `100^(@).` Hence, correct relation is
`(t_(A)-(LFP)_(A))/((UFP)_(A)-(LPF)_(A))=(t_(B)-(LFP)_(B))/((UFP)_(B)-(LFP)_(B))`
`rArr" "(t_(A)-30)/(180-30)=(t_(B)-O)/(100-0)rArr(t_(A)-30)/(150)=(t_(B))/(100)`
where, LFP `to` lower fixed poing
UFP `to` Upper fixed point