The impedance parameters $Z_{11}$ and $Z_{12}$ of the two-port network in the figure are
- $Z_{11}=2.75 \; \Omega$ and $Z_{12}=0.25 \; \Omega$
- $Z_{11}=3 \; \Omega$ and $Z_{12}=0.5 \; \Omega$
- $Z_{11}=3 \; \Omega$ and $Z_{12}=0.25 \; \Omega$
- $Z_{11}=2.25 \; \Omega$ and $Z_{12}=0.5 \; \Omega$