The city, which has no immunity to suit, has since refused to pay Gimlet anything, although he swears that he never heard of the city's repealer before claiming its reward"Which of the following best characterizes the relationship between Humongous and Gimlet?
A series of daily unilateral contracts, Humongous exchanging an express promise to pay the daily rate for Gimlet's daily activity of investigating the store's arson
A unilateral offer of employment by Humongous which became irrevocable for a reasonable number of days after Gimlet commenced his investigation of the store's arson.
An employment for compensation subject to a condition precedent that Gimlet succeed in his investigation.
A series of daily bilateral contracts, Humongous exchanging an express promise to pay the daily rate for Gimlet's implied promise to pursue his investigation with reasonable diligence. 