According to the passage, the choice of accommodation is influenced by the following factors EXCEPT ______.

A．The survey described in the passage is conducted by UK's National Union of Students.
B．Most of the subjects are from universities in London.
C．Most college students pay the rent by themselves.
D．Students think that communal areas should be cleaned regularlyby cleaners rather than themselves.

A．UK university students are increasingly satisfied with their living conditions.
B．UK university students are less and less energetic.
C．UK university students demand higher qualities of their living conditions.
D．UK university students pay less and less attention to their studies.