A plane electromagnetic wave travels in free space along X-direction. If the value of B vector (in tesla) at a particular point in space and time is 1.2 x 10⁻⁸ k cap, the value of E vector (in V m⁻¹) at that point is:
a) 1.2 j
b) 3.6 k
c) 1.2 k
d) 3.6 j