Tony Stark wants to enter into a contract with Steve Rogers to use lumber from Steves building supply store for all of his deck building jobs. Under which of the following is there a valid and binding agreement?

Group of answer choices

a) Steve is given a deadline to accept of Thursday at noon, and calls Tony Thursday at 3:00pm to accept

b) Steve accepts Tonys offer, but wants to change the products included

c) Steve rejects the offer, then calls Tony three days later and wants to accept the offer

d) Tony asks some questions about the lumber before accepting Steves offer as stated

e) Steve tries to accept the offer twelve months after last speaking to Tony about his offer