The angular momentum of an electron in 4s orbital, 3p orbital, and 4th orbit are

• A

  $0,\frac{1}{\sqrt{2}}\frac{h}{\pi },\frac{2h}{\pi }$

• B

  $\frac{1}{\sqrt{2}}\frac{h}{2},\frac{2h}{\pi },0$

• C

  $0,\frac{\sqrt{2}h}{\pi },\frac{4h}{\pi }$

• D

  $\frac{\sqrt{2}h}{\pi },\frac{4h}{\pi },0$