Only for inversion one of this mechanism, A. Use Grash of condition and the function of the shortest link in the left- and right-hand side loops to examine the rotate ability of links # 2 and 6. B. Use toggle position method in the left- and right-hand side loops to examine the rotate ability of links # 2 and 6. C. If any of the links # 2 or 6 is a rocker determine the range of the rotation.