CREATE TABLE table_78845 ("Season" TEXT, "League" TEXT, "Teams" TEXT, "Home" TEXT, "Away" TEXT)

Which season has the regionalliga s d (iii) league?
SELECT "Season" FROM table_78845 WHERE "League" = 'regionalliga süd (iii)'
SELECT "Season" FROM "table_78845" WHERE "League" = 'regionalliga süd (iii)'