What was the highest SaffirSimpson with an NHC advisory of 18?
CREATE TABLE table_75735 (
    "Name" text,
    "Year" real,
    "Landfall" text,
    "NHC Advisory Number" text,
    "V(mph)" real,
    "R(miles)" real,
    "Saffir-Simpson Category" real
)
SELECT MAX("Saffir-Simpson Category") FROM table_75735 WHERE "NHC Advisory Number" = '18'
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 highest SaffirSimpson with an NHC advisory of 18? ### Input: CREATE TABLE table_75735 (
    "Name" text,
    "Year" real,
    "Landfall" text,
    "NHC Advisory Number" text,
    "V(mph)" real,
    "R(miles)" real,
    "Saffir-Simpson Category" real
) ### Response: SELECT MAX("Saffir-Simpson Category") FROM table_75735 WHERE "NHC Advisory Number" = '18'