The magnetic field of an electromagnetic wave is given by: B = 1.6 × 10⁻⁶ cos ( 2 × 10⁷ z + 6 × 10¹⁵ t ) ( 2i + j ) Wb/m² The associated electric field will be: A. E = 4.8 × 10² cos ( 2 × 10⁷ z + 6 × 10¹⁵ t ) ( i − 2j ) V/m B. E = 4.8 × 10² cos ( 2 × 10⁷ z + 6 × 10¹⁵ t ) ( − i + 2j ) V/m C. E = 4.8 × 10² cos ( 2 × 10⁷ z − 6 × 10¹⁵ t ) ( 2i +j ) V/m D. E = 4.8 × 10² cos ( 2 × 10⁷ z − 6 × 10¹⁵ t ) ( −2j + i ) V/m