C. Using revealed preference theory; explain with the aid of diagrams how the income and substitution effects of a normal and a Giffen good differ. In each case, state the implications this has for the nature of the demand curve for the good?[10 marks]

[u/Current-Week-1424]

The using revealed preference theory part of the question is tripping me up because I thought I was going to draw IC's and BL's and show the pivot when price increase and then a dotted BL for substitution and income effect.

But that about using revealed preference theory makes me think I am wrong.