How does the market for normal good x react if there is an increase in income, ceteris paribus? Select one: a. D decreases, thus price increases, causing QD to increase and QS to decrease b. D increases, thus price decreases, causing QD to decrease and QS to increase c. D decreases, thus price decreases, causing QD to increase and QS to decrease d. D increases, thus price increases, causing QD to decrease and QS to increase e. D decreases, thus price decreases, causing D and S to decrease