What was the overall record in the season where average attendance was 16720?
CREATE TABLE table_3839 (
    "Season" text,
    "Overall Record" text,
    "SEC Record" text,
    "Overall Attendance" real,
    "Average Attendance" real,
    "Rank Nationally" text
)
SELECT "Overall Record" FROM table_3839 WHERE "Average Attendance" = '16720'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What was the overall record in the season where average attendance was 16720? ### Input: CREATE TABLE table_3839 (
    "Season" text,
    "Overall Record" text,
    "SEC Record" text,
    "Overall Attendance" real,
    "Average Attendance" real,
    "Rank Nationally" text
) ### Response: SELECT "Overall Record" FROM table_3839 WHERE "Average Attendance" = '16720'