What is the production code when the u.s. viewers (million) is 11.76?
CREATE TABLE table_3631 (
    "No. in series" real,
    "No. in season" real,
    "Title" text,
    "Director" text,
    "Writer(s)" text,
    "Original air date" text,
    "Production code" text,
    "U.S. viewers (million)" text
)
SELECT "Production code" FROM table_3631 WHERE "U.S. viewers (million)" = '11.76'
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 is the production code when the u.s. viewers (million) is 11.76? ### Input: CREATE TABLE table_3631 (
    "No. in series" real,
    "No. in season" real,
    "Title" text,
    "Director" text,
    "Writer(s)" text,
    "Original air date" text,
    "Production code" text,
    "U.S. viewers (million)" text
) ### Response: SELECT "Production code" FROM table_3631 WHERE "U.S. viewers (million)" = '11.76'