Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| School | Location | Founded | Affiliation | Enrollment | Nickname | Primary conference |
| --- | --- | --- | --- | --- | --- | --- |
| Drexel University | Philadelphia, PA | 1891.0 | Private/Non-sectarian | 17000.0 | Dragons | Colonial Athletic Association ( D-I ) |
| Lehigh University | Bethlehem, PA | 1865.0 | Private/Non-sectarian | 6956.0 | Mountain Hawks | Patriot League ( D-I ) |
| Penn State-Berks | Reading, PA | 1958.0 | Public | 3216.0 | Nittany Lions | North Eastern Athletic Conference ( D-III ) |
| Towson University | Towson, MD | 1866.0 | Public | 19758.0 | Tigers | Colonial Athletic Association ( D-I ) |
| Villanova University | Villanova, PA | 1842.0 | Private/Catholic | 9535.0 | Wildcats | Big East Conference ( D-I ) |
| Navy | Annapolis, MD | 1845.0 | Public/Federal | 4000.0 | Midshipmen | Patriot League ( D-I ) |
| University of Scranton | Scranton, PA | 1888.0 | Private/Catholic | 5160.0 | Royals | Landmark Conference ( D-III ) |
Question:
What is the primary conference that was founded before 1866 and has an affiliation of private/catholic?
Answer:
Big East Conference ( D-I )