which transmitter has a higher bbca , alston or haydon bridge ?
CREATE TABLE table_204_270 (
    id number,
    "transmitter" text,
    "kw" number,
    "bbca" number,
    "bbcb" number,
    "d3&4" number,
    "sdn" number,
    "arqa" number,
    "arqb" number,
    "pol." text,
    "a.g." text
)
SELECT "transmitter" FROM table_204_270 WHERE "transmitter" IN ('alston', 'haydon bridge') ORDER BY "bbca" DESC LIMIT 1
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: which transmitter has a higher bbca , alston or haydon bridge ? ### Input: CREATE TABLE table_204_270 (
    id number,
    "transmitter" text,
    "kw" number,
    "bbca" number,
    "bbcb" number,
    "d3&4" number,
    "sdn" number,
    "arqa" number,
    "arqb" number,
    "pol." text,
    "a.g." text
) ### Response: SELECT "transmitter" FROM table_204_270 WHERE "transmitter" IN ('alston', 'haydon bridge') ORDER BY "bbca" DESC LIMIT 1