Brett Offers to Sell His Old, but Working, Cell Phone

Multiple Choice

Brett offers to sell his old, but working, cell phone to James for $65. James says he will accept the offer if Brett lowers the price to $60. James has:

A) made an unequivocal acceptance.
B) made a counteroffer.
C) demonstrated the mirror image rule.
D) entered into an option contract.
E) entered into an executory contract.