Answer:
a. twenty four miles over two gallons
Step-by-step explanation:
12 miles per gallon x2 = twenty four miles over two gallons. it equivalent, also its not b or d because its miles then gallons. And 12 x 3 = 36, c says 36 and 4 are equivalent but like i typed 12 x THREE = 36 not 4. hope this helped ;)