2. On Planet Namek, there are 100 minutes in an hour. The clock on this planet has the hour hand completing one full circle in 20 hours, and the minute hand completing one full circle in 100 minutes. Starting from 0:00, to the next time the hour hand and the minute hand overlap, \qquad hours have passed on Planet Namek.
A. $\frac{10}{19}$
B. $\frac{12}{19}$
C. $\frac{20}{19}$
D. $\frac{24}{19}$
E. $\frac{40}{19}$
\begin{tabular}{l}
2 \\
\hline $\mathrm{C}$
\end{tabular}