Sheena Has Been Asked to Live in a Special Room

Sheena has been asked to live in a special room in which there are no windows,clocks or watches,and no access to time cues of any sort.How will these conditions affect Sheena's biological clock?

A) Her biological clock will be disrupted,showing little consistency from day to day.
B) Her biological clock will be unaffected and she will establish a 24-hour cycle.
C) Her biological clock will be just a few minutes longer than 24 hours.
D) She will show little change in her biological clock,whereas a male will show about a 23-hour rhythm.