A Common Land Unit (CLU) is the smallest unit of land that has a permanent, contiguous boundary, a common land cover and land management, a common owner and a common producer in agricultural land associated with USDA farm programs. CLU boundaries are delineated from relatively permanent features such as fence lines, roads, and/or waterways.
A CLU has permanent boundries
A CLU has permanent boundaries is neither correct nor incorrect due to most of the boundaries are permanent, however some of the boundaries may seem to be permanent but can eventually be removed (such as roads)