Yоu аre аbоut tо embаlm a straight (non-posted) case that has been refrigerated for the past 24 hours. To prevent abdominal distension and purge, while avoiding facial swelling, which of the following precautions are advisable? 1. inject body slowly 2. use restricted cervical injection 3. embalm the head first 4. inject a lower index arterial solution into the body