A. All licensees shall put an identifying mark on all existing objects that serve as markers for property corners.
B. The identifying mark may include any one of the following:
(1) Drill hole;
(2) Cross cut;
(3) Square cut;
(5) P.K. nail; or
(6) Lag bolt.
C. All licensees shall describe the identifying mark in any legal description or plat prepared by the licensee.