27.
A:
has, after the solemnization of the marriage, had voluntary sexual intercourse with any person other than his or her spouse; or
B:
has , after the solemnization of the marriage, treated the petitioner with cruelty ; or
C:
has deserted the petitioner for a continuous period of not less than five years immediately preceding the presentation of the petition;
D:
has ceased to be a Hindu by conversion to another religion.
The answer is: C