A says to B, "If you promise to paint my house, I promise to pay you $1500." B starts to paint in A's presence.Is there a contract?

Question 2 options:

A)

Yes, because B's conduct constitutes an implied promise to paint A's house.

B)

No, because A requested a promise and not an act.

C)

Yes, because B will be entitled to the reasonable value of her services.

D)

No, because no color, a material term was specified.