Suppose a museum charges different entrance fees for children, students, adults, and seniors, but these groups all pay the same amount for souvenirs at the gift shop. Which of the following explains why the museum price discriminates on admission but not souvenirs?

multiple choice

The entrance ticket is individual, while souvenirs are transferable.

The museum collects much more revenue on entrance tickets than on souvenirs.

There is much greater variance in cost among souvenirs than entrance tickets.

The museum has not yet realized the potential gain from price discrimination on souvenirs.