You Would Use Scale Transformation Under Which Circumstance

You would use scale transformation under which circumstance?

A) to compare image variables measured on a seven- point semantic differential scale with attitude variables measured on a continuous rating scale and lifestyle variables measured on a five- point Likert scale
B) to create new variables that are composites of several other variables
C) to adjust the sample so that greater importance is attached to respondents with certain characteristics
D) none of the above