A.This mischief could not be done by a child.
B.This mischief could not been done by a child.
C.This mischief could not have been done by a child.
D.This mischief a child could not have been done.
Show AnswerAnswer=Option C
A.This mischief could not be done by a child.
B.This mischief could not been done by a child.
C.This mischief could not have been done by a child.
D.This mischief a child could not have been done.
Show AnswerAnswer=Option C