A particle of mass 1 kg is moving along the line y = x + 2 (here x and y are in m) with speed 2 m/s. The magnitude of angular momentum of the particle about origin is:

• A

  4 ${\mathrm{kgm}}^2{\mathrm{s}}^{-1}$

• B

  $2\sqrt{2}$${\mathrm{kgm}}^2{\mathrm{s}}^{-1}$

• C

  $4\sqrt{2}$ ${\mathrm{kgm}}^2{\mathrm{s}}^{-1}$

• D

  2 ${\mathrm{kgm}}^2{\mathrm{s}}^{-1}$