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The electric field of a plane polarized ...

The electric field of a plane polarized electromagnetic wave in free space at time t = 0 is given by an expression
`vec(E) (x,y) = 10 hat(j) cos [(6 x + 8z)]`
The magnetic field `vec(B) (x, z, t)` is given by: (c is the velocity of light)

A

`(1)/(c) (6 hat(k) + 8 hat(i)) cos [(6x - 8z + 10 ct)]`

B

`(1)/(c) (6 har(k) - 8 hat(i)) cos [(6x + 8z - 10 ct)]`

C

`(1)/(c) (6 hat(k) + 8 hat(i)) cos [(6x + 8z - 10 ct)]`

D

`(1)/(c) (6 hat(k) - 8 hat(i)) cos [(6x + 8z + 10 ct)]`

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