Which of the following scenarios does not represent an impulse purchase?

Jenna goes to the home improvement store to purchase a new toilet and decides to fix the broken toilet herself with a $15 replacement part.
Jenna goes to the home improvement store to purchase a $15 replacement part for her broken toilet and chooses to spend her money on a $15 flashlight instead.
Jenna goes to the home improvement store to purchase a $15 replacement part for her broken toilet and decides to purchase a new $300 toilet instead.