The correct answer is “between 114 and 152 millimeters” because both measures are relevant and necessary from an engineering standpoint: For the purposes of sizing something such that it can utilize the branch for support, it must be made clear that the branch is solid and whole up to 114 millimeters from the trunk. For the purpose of accidental collision clearance, it is necessary to know the furthest extent of the branch’s reach no matter how damaged or distupted it is. Furthermore if the branch may break and fall off, giving it at least 152mm of clearance means that it is unlikely to accidentally catch upon something in its descent even if it “hinges” away from the trunk at the base.