"CDE"... If Demand curves shift to the left, its Contractionary, hence, C to the left of D. If Demand curves shift to the right, its Expansionary, hence E to the right of D. CDE, chronological in the letters of the alphabets.
Just one of the ways, I try to figure out how to remember these things for this exam. What are some of your tricks or acronyms on remembering the topics for BEC? Would appreciate any input!! Thank you in advance!