Uncertainity in position of a $e^–$ and He is similar. If uncertainity in momentum of $e ^–$ is $32 \times 10^ 5$, then uncertainity in momentum of He will be :

Question

( A ) $8 \times 10^5$
( B ) None of these
( C ) $16\times 10^5$
( D ) $32 \times10^5$