Here, we need to check proportionality by dividing amount of fuel in gallons from distance in miles
1) 27.3/1.5 = 18.2
49.16/3.8 = 12.93 Results are different so, it is wrong
2) 135/7.4 = 18.24
135.5 / 7.9 = 17.15
3) 120 / 6.2 = 19.35
180/12.2 = 14.75
4) 270/15 = 18
135/7.5 = 18 [ Results are equal here, so it is proportional ]
In short, Your Answer would be Option D
Hope this helps!