Hideki owns land with a huge number of trees on it. In order to protect the land, Hideki would like to remove some of the trees, or "thin" the property. Hideki gives permission to remove all but 250 trees to Ekaterina, who runs a business carving wood art in the next town. Ekaterina likely has__________.

a. an easement appurtenant.
b. a profit.
c. a license.
d. an easement in gross.