What would be the length of the takeoff run (ft)?

GIVEN INFORMATION:

Use "g" = 32.2 ft / s2

1 knot = 1.69 ft / s

Gross Weight = 20,000 pounds

Average Drag = 2,000 pounds

Average Friction Force = 400 pounds

Average Thrust = 10,000 pounds

Lift Off Speed = 125 KTAS

a: 1014 feet

b: 1824feet

c: 638feet

d: 3648feet