Neighbor contracts to buy Dad's car for $5,000. Dad and Neighbor agree that Neighbor will stop by on Friday to pay for the car and pick up the keys. On Tuesday, Dad sells the car to Son for $500, who desperately needs a car to get to his new job across town but can't afford to pay much for it. On Wednesday, Neighbor sees Son driving the car and finds out about the sale. Regarding these facts:

a)Dad has anticipatorily breached the contract with Neighbor

.b)Dad has unequivocally communicated his intent not to perform.

c)Neighbor can sue immediately for breach.

d)All of the above.