A \( 5.46 \times 10^{-30} \mathrm{~kg} \)
B \( 6.45 \times 10^{-30} \mathrm{~kg} \)
C \( 6.45 \times 10^{-31} \mathrm{~kg} \)
D \( 5.46 \times 10^{-31} \mathrm{~kg} \)
Correct Answer: Option B
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