Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_25691838_12 (production_code VARCHAR, original_airdate VARCHAR)
### Question:
What is the production code of the episode with an original airdate of december 01?
### Answer:
SELECT production_code FROM table_25691838_12 WHERE original_airdate = "December 01"