The 3 Day was amazing ! We started out on Friday morning at about 7 for opening ceremonies and got walking about 8 . Friday we walked 21.5 miles ( 34.6 km ) ; at least , that 's what they told us , lol .
According to the above context, choose the best option to answer the following question.
Question: why did they walk 21.5 miles ?
Options:
A. they never get tired walking
B. they were asked to walk that length to the ceremony
C. None of the above choices .
D. they like walking for long amounts of time


B