A network either T or π, is said to be of the constant-k type if Z1 and Z2 of the network satisfies the relation?

A network either T or π, is said to be of the constant-k type if Z1

1.	A network either T or π, is said to be of the constant-k type if Z1 and Z2 of the network satisfies the relation?
A.	Z1Z2 = k
B.	Z1Z2 = k2
C.	Z1Z2 = k3
D.	Z1Z2 = k4
Answer» C. Z1Z2 = k3