What should be the momentum (in $g \ cm / s$) of a particle if its de Broglie wavelength is $1 \ \mathring{A}$ and the value of $h$ is $6.6252 \times 10^{-27} \ erg \ s$?
- A$6.6252 \times 10^{-19} \ g \ cm / s$
- B$6.6252 \times 10^{-21} \ g \ cm / s$
- C$6.6252 \times 10^{-24} \ g \ cm / s$
- D$6.6252 \times 10^{-27} \ g \ cm / s$
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