The radius of the first permitted Bohr orbit for the electron in a hydrogen atom equals $0.53 \mathring{A}$ and its ground state energy equals $-13.6 \; eV$. If the electron in the hydrogen atom is replaced by a muon $(\mu^{-})$ [charge same as electron and mass $207 m_{e}$], the first Bohr radius and ground state energy will be:

• A
  $0.53 \times 10^{-13} \; m, -3.6 \; eV$
• B
  $25.6 \times 10^{-13} \; m, -2.8 \; eV$
• C
  $2.56 \times 10^{-13} \; m, -2.8 \; keV$
• D
  $2.56 \times 10^{-13} \; m, -13.6 \; eV$