The charge on an electron is equal to

• A
  $1.6 \times 10^{-23} \text{ C}$ of $-ve$ charge
• B
  $1.6 \times 10^{-22} \text{ C}$ of $-ve$ charge
• C
  $2.6 \times 10^{-19} \text{ C}$ of $-ve$ charge
• D
  $1.6 \times 10^{-19} \text{ C}$ of $-ve$ charge