Corey Has a Blue Sweater and a Denim Jacket

Multiple Choice

Corey has a blue sweater and a denim jacket.On some days he chooses to wear the sweater but on others he chooses to wear the jacket.Economists would most likely conclude that:

A) Corey's preferences have changed.
B) Corey's preferences have not changed, but other factors may have changed such as the temperature outside.
C) Corey is irrational if he wears different clothing on different days.
D) Corey is indifferent between wearing a jacket or a sweater.