In which of the following is the option described not a performance obligation?

Group of answer choices

Upon purchase of any name$-$brand TV$,$ customers can purchase a $5-$year extended warranty at a $25\%$ discount.

Customers can get $5\%$ cash back for every $$100$ spent on eco$-$friendly products.

Customers can "buy two, get one free" at a menswear store.

Customers accumulate points for every dollar spent at Madeline's Book Store. The points can be redeemed for books once certain levels are met.