If Z is the number of zeros of 1 + G(s) H(s) in the right half s plane. N is the number of clockwise encircle elements of (-1 + jo) point. P is the number of poles of G(s) H(s) in right half s plane. The Nyquist stability criterion can be expressed as

If Z is the number of zeros of 1 + G(s) H(s) in the right half s plane

1.	If Z is the number of zeros of 1 + G(s) H(s) in the right half s plane. N is the number of clockwise encircle elements of (-1 + jo) point. P is the number of poles of G(s) H(s) in right half s plane. The Nyquist stability criterion can be expressed as
A.	Z = N + P
B.	Z = P/N
C.	Z = N - P
D.	Z = PN
Answer» B. Z = P/N