how many pick# does the chivas usa mls team have
CREATE TABLE table_4231 (
    "Pick #" real,
    "MLS team" text,
    "Player" text,
    "Position" text,
    "Affiliation" text
)
SELECT MAX("Pick #") FROM table_4231 WHERE "MLS team" = 'Chivas USA'
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: how many pick# does the chivas usa mls team have ### Input: CREATE TABLE table_4231 (
    "Pick #" real,
    "MLS team" text,
    "Player" text,
    "Position" text,
    "Affiliation" text
) ### Response: SELECT MAX("Pick #") FROM table_4231 WHERE "MLS team" = 'Chivas USA'