On Monday, Person A offers to sell his motorcycle to Person B for $$20,000,$ and tells Person B that the offer is open until that coming Friday. On Friday, at $11$:$59$ pm$,$ Person B calls Person A and tells him that she accepts his offer. Have the two entered into a legally binding contract? Why or why not?

No$,$ because Person B accepted Person A$\text{'}$s offer outside normal business hours.

No$,$ because there is no consideration.

Yes, because Person B accepted the offer by that coming Friday.

Yes, because Person B accepted the offer over the phone.