CREATE TABLE table_name_85 (points INT, year VARCHAR, engine VARCHAR, chassis VARCHAR)

Which engine of bmw had the lowest points and chassis of march 792 that is newer than 1979?
SELECT MIN(points) FROM table_name_85 WHERE engine = "bmw" AND chassis = "march 792" AND year > 1979
SELECT MIN("points") FROM "table_name_85" WHERE "bmw" = "engine" AND "chassis" = "march 792" AND "year" > 1979