Phillie Phanatic Had His Own Book Signing at Barnes and Noble

Phillie Phanatic had his own book signing at Barnes and Noble in Exton, Pennsylvania, for the children's book series-The Phillie Phanatic's Happiest Memories, The Phillie Phanatic's Moving Day, The Phillie Phanatic's Phantastic Journey, and Happy Birthday Phillie Phanatic.If the baseball team is trying to get people to the game, why would they host an activity away from the stadium?

A) They are trying to build future attendees but they don't want younger children bothering people during the games.
B) They need to generate revenue during the months when the stadium is closed.
C) It generates team spirit, adds to non-ticket revenues, and cultivates fans for the future.
D) Phillie Phanatic is used to reduce hostility towards the team when they have a losing season.
E) The new stadium was built significantly smaller and cannot hold as many activities on the premises.