An oil company fills 1 over 12 of a tank in 1 over 4 hour with gasoline. At this rate, which expression can be used to determine how long it will take for the tank to fill completely? (1 point)
Group of answer choices
1 over 4â‹… 1 over 12
1 over 12â‹… 4
1 over 4â‹… 12
12 â‹… 4