Kent,a University Student,is a Loyal Coca-Cola Drinker

Kent,a university student,is a loyal Coca-Cola drinker.He averages about six Cokes a day.He even prefers Coke to water.However,today when he passed a vending machine in his dorm he bought a new flavour of soft drink called Big Red.Which of the following most accurately explains his behaviour,given the facts about Kent's previous behaviour?

A) Kent is variety seeking.
B) Kent is brand switching.
C) Kent is involved in extended problem solving.
D) Kent is influenced by peer pressure.