What is the reverse recovery time of a diode when switched

What is the reverse recovery time of a diode when switched from forward bias V_F to reverse bias V_R?

1. Time taken to remove the stored minority carriers
2. Time taken by the diode voltage to attain zero value
3. Time to remove stored minority carriers plus the time to bring the diode voltage to reverse bias V_R
4. Time taken by the diode current to reverse

Time taken to remove the stored minority carriers is the reverse recovery time of a diode when switched from forward bias V_F to reverse bias V_R.