Pablo inherits real property from his mother Juanita. Thirty years ago, Juanita granted an appurtenant easement to the adjacent property allowing access to the lakefront. Which of the following statements is true
a) Pablo cannot revoke the easement
b) The easement terminates upon Juanita's death
c) Pablo must compensate the adjacent property owner for the easement
d) The easement automatically expires after 20 years