The value of the elementary charge is
[tex]e=1.6\times10^{-19}\text{ C}[/tex]We have to find a charge equivalent to 3e.
The charge equivalent to 3e will be
[tex]\begin{gathered} 3e\text{ = 3}\times1.6\times10^{-19}\text{ C} \\ =4.8\times10^{-19}\text{ C} \end{gathered}[/tex]Thus, the correct option is c.
