To explain the observed magnetic moment of deuteron (0.8574 μ<sub>N</sub>), its ground state wavefunction is taken to be an admixture of S and D states. The expectation values of the z component of the magnetic moment in pure S and pure D states are 0.8797 μ<sub>N</sub> and 0.3101 μ<sub>N</sub> respectively. The contribution of the D state to the mixed ground state is approximately

Correct Answer: 4%