Choose one answer for each of the following multiple$-$choice questions.

$1-1[2$ points$]$ You work for a rental car company. You are in charge of monitoring the online bookings.

On average, the company receives $3$ online bookings per hour. Let X be the amount of time, in minutes,

until the next online booking.

a$)$ X $$ P ois$(3).$

b$)$ X $$ Geom$(1/3).$

c$)$ X $$ Exp$(3).$

d$)$ X $$ Exp$(3/60).$

e$)$ X $$ P ois$(3/60$