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 | Mascot | Enrollment | IHSAA Football Class | Primary Conference | County |
| --- | --- | --- | --- | --- | --- | --- |
| Eastern Hancock | Charlottesville | Royals | 355.0 | A | Independent | 30 Hancock |
| Indian Creek | Trafalgar | Braves | 608.0 | AAA | Mid-Hoosier | 41 Johnson |
| Milan | Milan | Indians | 408.0 | A | Ohio River Valley | 69 Ripley |
| North Decatur | Greensburg | Chargers | 369.0 | A | Mid-Hoosier | 16 Decatur |
| South Decatur | Greensburg | Cougars | 292.0 | A | Mid-Hoosier | 16 Decatur |
| Triton Central | Fairland | Tigers | 525.0 | AA | Mid-Hoosier | 73 Shelby |
Question:
What is the primary conference with a IHSAA Football Class of A, at South Decatur school?
Answer:
Mid-Hoosier