Section ___________ of C.P.C. deals with making of application to challenge the validity of a judgment, decree or order on plea of fraud, misrepresentation or want of jurisdiction ?

Section ___________ of C.P.C. deals with making of application to challenge the validity of a judgment, decree or order on plea of fraud, misrepresentation or want of jurisdiction ?

A. 11,
B. 12(1),
C. 12(2),
D. None of the these