The momentum of 1 J of energy in an electromagnetic wave is:
A. 1 x 10⁻¹⁷ kg m/s
B. 1000 kg m/s.
C. 3 x 10⁻⁹ kg m/s.
D. 1.5 x 10⁻⁹ kg m/s.
E. 1 kg m/s.