Correct Answer - B
For the graph
For the scale A,
Lower fixed point `= 30^(@)A`
Upper fixed point `= 180^(@)A`
For the scale ` B` ,
Lower fixed point `= 0^(@)B`
Upper fixed point `= 100^(@)B`
`:.` The relationship between the two scales A an B is given by
`(T_(A) - 30) /(150) = (T_(B) - 0)/(100) = (T_(B))/(100)`