The correct option is A 15800
In East Coast (PADD1), fuel used = 5500.
In Mid-west (PADD2), fuel used = 4100.
In Gulf Coast (PADD3), fuel used = 2900.
In Rockies (PADD4), fuel used = 500.
In West Coast (PADD5), fuel used = 2800.
Sum total of fuel used = 5500+ 4100 + 2900 + 500 + 2800 = 15800.