Alarmed at the Rising Gas Prices in Your Town,you Decide

Alarmed at the rising gas prices in your town,you decide to estimate the average gas price for a litre of regular unleaded gasoline.From your sample of 25 gas stations,you calculate a 90% confidence interval of ($1.33,$1.41) .

A) $0.08
B) $1.37
C) $0.04
D) $2.74
E) Not enough information is given.