Bobby Makes a New Year's Resolution to Lose Weight

Multiple Choice

Bobby makes a New Year's resolution to lose weight.On January 3^rd,he decides to go to Ben amp; Jerry's for ice cream instead of going to the gym.Using the concept of revealed preference,economists would most likely conclude that Bobby:

A) is not a rational individual.
B) actually gains more utility from ice cream than working out.
C) has changed his preferences.
D) has no choice over the actions he takes.