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For a plane EM wave propagating in x-dir...

For a plane EM wave propagating in x-direction which one of the following combination gives the correct possible direction for electric field E and magnetic field B resp.?

A

`hat(j) + hat(k), - hat(j)-hat(k)`

B

`-hat(j) + hat(k), - hat(j)+hat(k)`

C

`hat(j) + hat(k), hat(j)+hat(k)`

D

`-hat(j) + hat(k), - hat(j)-hat(k)`

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