The times (in minutes) it took nine students to complete a quiz are $18$, $22$, $15$, $25$, $20$, $16$, $19$, $24$, and $21$. What are the mean and median times?

Mean time: $20\text{ min}$

Median time: $21\text{ min}$

Mean time: $21\text{ min}$

Median time: $20\text{ min}$

Mean time: $21\text{ min}$

Median time: $21\text{ min}$

Mean time: $20\text{ min}$

Median time: $20\text{ min}$