The axoplasm of a neuron, which is at resting state contains

high concentration of  ${\mathrm{Na}}^{+},{\mathrm{K}}^{+}$ and negatively charged proteins

low concentration of  ${\mathrm{K}}^{+}$ and negatively charged proteins and high concentration of ${\mathrm{Na}}^{+}$

high concentration of  ${\mathrm{K}}^{+}$ and negatively charged proteins and low concentration of  ${\mathrm{Na}}^{+}$

low concentration of  ${\mathrm{Na}}^{+},{\mathrm{K}}^{+}$ and  negatively charged proteins