Max 's sister came to visit last night on her way to New Orleans and brought our niece ( 2 ) and nephew ( 5 ) . ( Max went with them today ) . We blew up the air mattress and had a sleepover .

OPT: I. They were up too late . II. They do n't have a home . III. They do n't live in the area . IV. None of the above choices .
Answer the following question: What may be the reason for them staying overnight ?
III.