The electric field of a uniform plane electromagnetic wave in free space, along the positive x direction, is given by $$\overrightarrow E = 10\left( {{{\hat a}_y} + j{{\hat a}_z}} \right){e^{ - j25x}}.$$     The frequency and polarization of the wave, respectively, are

A. Radar B. Direction finding C. Satellite communication D. All of the above

A. Scalar B. Vector C. Unit vector D. None of the above

A. Hertz antenna B. Marconi antenna C. Folded dipole D. None of the above

A. Accelerating B. Retardation C. Oscillating D. Lagging the current