Strong Construction Accepted Bids for Its Bid to Build Homes

Strong Construction accepted bids for its bid to build homes in the Hillcrest Development. Fred's Framing submitted a bid that Strong used in his bid. Strong got the project and then Fred's backed out of its bid. Which of the following is correct with respect to Strong's rights?

A) Fred's only made an offer, so it is free to withdraw
B) Fred's is bound to perform for the bid price submitted
C) Fred's is bound to perform, but can raise the price
D) Fred's is bound to perform if Strong accepted