Alandowner and her neighbor owned large adjoining properties. the boundary line between the properties was never clearly marked. twenty-five years ago, the landowner dug a water well on a section of the property that she thought was hers, but in fact was the neighbor's. the landowner has continued to use the water and to maintain the well on a regular basis ever since. the neighbor was adjudicated mentally incompetent 15 years ago. he died recently, and his executor has filed suit to eject the landowner and quiet title. the jurisdiction's statute of limitations for adverse possession is 20 years. with respect to the land on which the water well was dug, which of the following is correct? a the landowner has acquired title by adverse possession. b the landowner cannot claim title as an adverse possessor because she did not enter with hostile intent. c the landowner cannot acquire title because the neighbor was adjudicated incompetent. d the landowner has an implied easement in the land.