Answer:
Both A ad B are right
Step-by-step explanation:
A sectioning joint are joints that are pieces to butted, spaced two to three metal thickness apart
Cut locations on a metal parts are made by die marks stamped to the part to enable the cutter to locate the cut location
The cut location can be specified on a model diagram such that when such a required cut is to be made a reference point to the cut location is specified for quality and accuracy.