The electric field of a uniform plane electromagnetic wave is\({\rm{\vec E}} = \left( {{{{\rm{\vec a}}}_{\rm{x}}} + {\rm{j}}4{{{\rm{\vec a}}}_{\rm{y}}}} \right)\exp \left[ {{\rm{j}}\left( {2{\rm{\pi }} \times {{10}^7}{\rm{t}} - 0.2{\rm{z}}} \right)} \right]{\rm{\;}}\)The polarization of the wave is

• A. right handed circular
• B. right handed elliptical
• C. left handed circular
• D. left handed elliptical