We went to the Air Show in OshKosh at the end of July . The boys absolutely loved it since they are obsessed with planes , jets , etc . They got to tour the inside of a B-17 Flying Fortress and an Osprey . They tried working on the underside of the F-15 Eagle and it was probably a good thing they could n't really reach anything .

pick from the following.
(A). None of the above choices .;
(B). They were pilots in the airshow .;
(C). Their boys wanted to see airplanes .;
(D). Their boys wanted to fly an airplane .;
Q: Why did they go to the airshow ?
(C).