Read the following Statements(a) Wave impedance of TM wave in the z-direction is \({Z_z}\left( {TM} \right) = \eta \sqrt {1 - \frac{{{{\left( {{\omega _c}} \right)}^2}}}{{{{\left( \omega \right)}^2}}}}\)(b) Wave impedance of TE wave in the z-direction is \({Z_z}\left( {TM} \right) = \frac{\eta }{{\sqrt {1 - \omega _c^2/{\omega ^2}} }}\)(c) Wave impedance of TM wave in the z-direction is \({Z_z}\left( {TM} \right) = \frac{1}{\eta }\)(d) The characteristic impedance Z0 is defined for short length lineWhich of the above statements are correct?

• A. (a) and (d) are correct
• B. (a) is correct but (b) is wrong
• C. (c) and (d) are correct
• D. (a) and (b) are correct