CREATE TABLE table_name_27 (overall_pick INT, position VARCHAR, nfl_draft VARCHAR)

What is the highest overall pick that has c as the position, with an NFL Draft greater than 1977?
SELECT MAX(overall_pick) FROM table_name_27 WHERE position = "c" AND nfl_draft > 1977
SELECT MAX("overall_pick") FROM "table_name_27" WHERE "c" = "position" AND "nfl_draft" > 1977