When building a cnc fixture for a part; what is the easiest way to make sure the cutter will not be damaged while machining the profile of the part? (a)-go back to the cad model often to double check the geometry of the part (b)-dry run the program many times to ensure it is dear of all locators and clamps. (c) perform many calculations in the program to make sure all locators are dear of the tool path. (d) use the program itself to cut a clearance channel for the cutter and then install locators