Select the Fallacy or Bad Argument Technique Which Occurs in the Following

Multiple Choice

Select the fallacy or bad argument technique which occurs in the following argument: If you think I'm going to let you have a cell phone at your age, you've got another think coming. Once you've got a cell phone, you'll want an i-pod, then it'll be an i-phone, and before I know it you'll be demanding I buy you a sports car.

A) Perfectionist fallacy
B) Tu quoque
C) Post hoc ergo propter hoc
D) Slippery slope