Season ticket holders for the St. Louis Rams received a surprise when they read the applications ...

Season ticket holders for the St. Louis Rams received a surprise when they read the applications forms to renew their season tickets.  In order to get their season ticket to the Rams' home games, they also had to buy tickets to the preseason games.  Many season ticket holders grumbled about this practice as an underhanded way for the St. Louis Rams to get more money from its season ticket holders.  This practice is an example of:
A) peak-load pricing.
B) intertemporal price discrimination.
C) two-part tariff.
D) bundling.
E) Both A and B are correct.