Easement: A subdivides his water-front property and sells one parcel along the shoreline to B.At the same time A creates an easement for right away across B's land so that A can reach the water when he wants to.Under these facts, which of the following is correct?

1)A has created an easement appurtenant by reservation

2) A has acquired an easement by prescription.

3) A has granted B an easement in gross

4)Both A and B are correct.