In an electromagnetic wave the / () and / () fields are oriented such that

O they are parallel to one another and parallel to the direction of wave propagation.
O they are parallel to one another and perpendicular to the direction of wave propagation.
O they are perpendicular to one another and perpendicular to the direction of wave propagation.
O they are perpendicular to one another and parallel to the direction of wave propagation.
O None of the above answers is correct.