Joe's pie shop serves only chocolate pies and coconut cream pies. On a given day, Joe sold 200 pies, with each customer buying either one coconut cream pie, one chocolate pie, or one of each. If 80 customers bought both a coconut cream and a chocolate pie, how many chocolate pies did Joe sell?

1. 40 customers did not buy a chocolate pie.
2. 120 customers bought a coconut cream pie.

[spoiler]OA: D[/spoiler]