Highflight Foundation Offers $1 Million to the Makers of the First

Highflight Foundation offers $1 million to the makers of the first private spacecraft to fly to the moon and back.Spaceview,Inc.succeeds in producing the first private spacecraft to fly to the moon and back,but Highflight refuses to pay.This is a ________ contract and Highlight is ________.

A) unilateral;not bound by the offer unless there is a written and signed contract with Spaceview
B) unilateral;bound because Spaceview performed the required action,which was an acceptance of the offer
C) unilateral;not bound since the moon is not under U.S.legal jurisdiction
D) bilateral;bound since Spaceview had a firm offer