The Figures Below Show Chris's Consumption of Specialty Coffee Per

The figures below show Chris's consumption of specialty coffee per week.
FIGURE 6- 10
-Marginal utility analysis predicts a downward- sloping demand curve for good X because

A) as PX rises,the consumer increases purchases of X such that MUX/PX is equal to MU/P for all other products.
B) all demand curves are downward sloping,regardless of the behaviour of consumers.
C) utility- maximizing consumers equate marginal utility received for each product consumed.
D) as PX falls,the consumer increases purchases of X until MUX/PX is equal to MU/P for all other products.
E) as PX falls,the ratio MUX/PX becomes smaller,causing the consumer to purchase more of good X.