When drawing a strategic group map

a$)$ it is important to use price as the variable for the vertical axis.

b$)$ the best variables to use as axes for the map are those that identify the competitive characteristics that delineate strategic approaches used in the industry.

c$)$ the primary objective is to determine which strategic groups are profitable and which are not.

d$)$ it is important for the variables used as axes to be highly correlated.

e$)$ one strategic variable and one financial variable should be used as axes for the map.