Identify all situations that will result in a performance obligation.

$1.$ Glendale College charges students a $$50$ nonrefundable application fee.$$

$2.$ Aeromic Co$.$ offers $3\%$ off from invoice price for customers who make early payments.

$3.$ Best Store let any customers return products within $60$ days from purchased date.

$4.$ Ms$.$ Dailey entered into a contract with Hero Inc. that will give her free repair parts if the used car she bought from Hero should need repair in the first one year.