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Calculate the ratio of electrostatic to gravitational force between two electrons placed at certain distance in air. Given that \( m_{e}=9.1 \times 10^{-31} \mathrm{~kg} \). e \( =1.6 \times 10^{-19} \mathrm{C} \) and \( G=6.6 \times 10^{-11} \mathrm{~N} \mathrm{~m}^{2} \mathrm{~kg}^{-2} \).
(A) \( 8.4 \times 10^{42} \)
(B) \( 3.2 \times 10^{41} \)
(C) \( 4.2 \times 10^{42} \)
(D) \( 1.2 \times 10^{42} \)
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