Calculate the number of electrons constituting one coulomb of charge. (Charge on one electron $= 1.6 \times 10^{-19} \text{ C}$)
- A$6.25 \times 10^{18}$
- B$1.6 \times 10^{19}$
- C$6.25 \times 10^{17}$
- D$1.6 \times 10^{18}$
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