Vroom Vacuums sells the Tornado vacuum cleaner. Each Tornado has a one-year warranty that covers any product defects. When customers purchase a Tornado, they also have the option to purchase an extended three-year warranty that covers any breakage or maintenance. Customers pay 20% less for the extended warranty if they buy it at the same time they buy a Tornado.

How many performance obligations exist in the implied contract for the purchase of a vacuum cleaner?

a. Deliverty of vacuum cleaner

b. One-year quality-assurance warranty

c. Option to purchase the three-year extended warranty

d. Purcase of vacuum cleaner