I did n't feel so good after and then I got the hiccups for 1.5 hours ... That was bad . -We went to the Leopold museum . I still had the hiccups then which was awful and embarrassing ( people probably thought I had been drinking and it was only the afternoon ) ... The museum was pretty good .

Give answer the following question using evidence from the above passage: What caused hiccups before going to the museum ?
None of the above choices .