Right choice is (b) False
Best explanation: Elements that violate any of the continuity conditions are known as non-conforming elements. Thus, the four-node rectangular element with w approximated by a 12-term polynomial is non-conforming. Despite this deficiency, the element is known to give good results. A similar discussion leads to the conclusion that the three-node triangular element is the non-conforming type and found to have convergence problems and singular behavior for certain meshes.