Bethesda hospital has recently developed an occupational medicine program. it wants to target employers in the baltimore metropolitan area. the director of the program has a range of services within this program including toxicology assessment, education around issues such as preventing back injuries, stress management, and providing medical treatment at factories, should it be desired. suggest 3 alternative ways the customer base for this new service could be segmented and indicate how each base of segmentation would result in a change in the marketing mix.