CREATE TABLE table_35650 ("Season" FLOAT, "Episodes" FLOAT, "First air date" TEXT, "Last air date" TEXT, "Timeslot" TEXT, "DVD Release" TEXT)

Which season had its last episode air on March 11, 2001?
SELECT "Season" FROM table_35650 WHERE "Last air date" = 'march 11, 2001'
SELECT "Season" FROM "table_35650" WHERE "Last air date" = 'march 11, 2001'