As Price Falls Along a Given Demand Curve for Pretzels

As price falls along a given demand curve for pretzels,

A) quantity demanded, total utility, marginal utility, and consumer surplus increase; consumer expenditure decreases
B) quantity demanded, total utility, and consumer surplus increase; marginal utility and consumer surplus decrease
C) quantity demanded, total utility, consumer surplus, and consumer expenditure increase; marginal utility decreases
D) quantity demanded, total utility, and consumer surplus increase; marginal utility decreases; consumer expenditure might increase, decrease, or remain constant
E) quantity demanded, total utility, marginal utility, consumer surplus, and consumer expenditure all increase