I was tanking up then at $ 4.09 . Yesterday up to $ 4.14 . Gas went up over a third . In one year . Are you making a third more that you were last year?Yeah , I thought not .

Question with options to choose from: What might be the reason that the gas price went up a third in a year ?
Options: a). None of the above choices .. b). The supply of the oil may have stayed the same in the year .. c). The demand of the oil may have gone down in the year .. d). The supply of the oil may have gone up in the year ..
a).