This question has options. Answer the question about text:

Not mention we had a dinner in Richmond with Tim 's parents later in the evening as it was my father in law 's birthday yesterday . So ... 2 bags of those " Those Little Donuts " and a birthday dinner later , I ' m paying the price for it today . Gon na have to do some serious working out on the elliptical trainer !

Why is the narrator spending so much time on the elliptical ?
Options:
[I] They had a big dinner .
[II] It 's the only machine at the gym .
[III] None of the above choices .
[IV] They are in training .
[I]