SELECT "Handicap" FROM table_30840 WHERE "Prize Money" = '120s'
What was the handicap when the prize money was 120s?
CREATE TABLE table_30840 (
    "Age" real,
    "Date" text,
    "Track" text,
    "Race" text,
    "Distance (miles)" text,
    "Jockey" text,
    "Handicap" text,
    "Field (No. horses)" text,
    "Place" text,
    "Time" text,
    "Prize Money" text,
    "+ Sweepstake" text,
    "Archer\u2019s winnings" text
)