Read the following article and answer the question by choosing from the options.

I expected a " yeah , yeah , are you going to bother me about this now " response ( meant good - heartedly , bless him ; I am commonly laughed at for the fact that I tend to " work on " Dan a lot but he is allowed to and even advised to ignore it as much as possible b / c I ' m really just dreaming out loud ) but to my surprise he kind of went " Oh , really ? Huh " which to many sounds disinterested but I thought I detected a note of interest there . I SWEAR TO YOU NOW that I had NO intention , originally , of doing this cruise . When I checked the rates it was because I had nothing else to do .

What may be the reason for them going on the cruise ?
Pick from: i. They got a promotion at work .; ii. None of the above choices .; iii. They could n't afford it .; iv. They could afford it .;...A:
iv.