Robert Buys a Piece of Land on Michael's Farm,which Is

Robert buys a piece of land on Michael's farm,which is situated in the southwest corner of the farm,nearly one kilometer from the highway which runs horizontal to the northern section of the farm.In order for Robert to access the highway,he must travel north across Michael's farmland.When Michael tells Robert he is trespassing on the farmland,Robert should argue that

A) by purchasing a part of Michael's farmland,he is entitled to use whatever part he chooses.
B) the use of Michael's farmland in accessing the highway is an implied easement.
C) the use of Michael's farmland in accessing the highway is an express easement.
D) the owner of the corner lot prior to Robert had signed a restrictive covenant that allows access via the farmland,meaning Robert should be entitled as well.
E) he should be able to use any part of the farmland as long as he does not damage it.