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 will most likely conclude that:,

a) there is a preference for sweaters over jackets.
b) Corey's clothing choices are unpredictable.
c) there is a seasonal pattern to Corey's clothing choices.
d) there is no predictable pattern to Corey's clothing choices.