The electric field of an electromagnetic wave in free space is given by where t and x are in seconds and metres respectively. It can be inferred that
(1) The wavelength is 188.4 m.
(2) The wave number k is 0.33 rad/m.
(3) The wave amplitude is 10 V/m.
(4) The wave is propagating along +x direction
Which one of the following pairs of statement is correct ?
(a) (3) and (4) (b) (1) and (2)
(c) (2) and (3) (d) (1) and (3)