When we change the price of a good, the total effect (TE) in quantity demanded is caused by two separate effects, the substitution effect (SE) and income effect (IE). Therefore, we have: TE = SE + IE A. Explain with your own words what the SE and IE are. B. Draw two stacked graphs showing the change in the optimal consumption bundle, and the SE and IE for a normal good x when its price decreases from px' to px". C. What would change if x were an inferior good?