about five major characteristics

for example :in respect to differences between services and manufacturing in the scope of Target cost, in terms of bpp version it provides five major characteristics, however the answers referring to quick quiz choices “inseparability and simultaneity “and “variability and heterogeneity”. in fact if i did not see the text ,my answer maybe should be correct
following is that quick quiz
which of the following are the five major charcteristics of services that disginguish services from munufacturing?