Interarrival time data is given as $1,2,0$ minutes respectively and process times are given as $2,$

$1,2,2$ minutes respectively for a G$/$G$/1$ queuing model. Run this model for $5$ minutes. What is

the average waiting time of the entities?

a$.0\mathrm{.}75$

b$.0\mathrm{.}25$

c$.1\mathrm{.}00$

d$.0\mathrm{.}00$

e$.0\mathrm{.}50$