A Neutron Star Has Approximately the Density of Nuclear Material $\times$

A neutron star has approximately the density of nuclear material.If a typical neutron star has a radius of 8.0 km,what is its mass.You may wish to use the relationship r = (1.2 fm) A^1/3 together with the mass of a proton,1.67 $\times$ 10^-27 kg,to estimate.

A) 0.65 $\times$ 10³⁰ kg
B) 1.5 $\times$ 10³⁰ kg
C) 0.16 $\times$ 10³⁰ kg
D) 0.49 $\times$ 10³⁰ kg