Which of the following statement is false about the inverse ZT？

A、The contour integral definition of inverse ZT can be deduced by inverse DTFT.;

B、The contour integral definition of inverse ZT can be solved by Residue Method.;

C、The contour integral definition of inverse ZT can be solved only by Residue Method or contour integration.;

D、In the contour integral definition of inverse ZT，the contour C is a counterclockwise closed line in the ROC of z-transform.