Falling hospital admissions and shorter length of hospital stays beginning in the mid 1980s may be attributable to
a. the introduction of the DRG system.
b. the increase in the number of out-patient visits.
c. a healthier population and a reduced incidence of certain diseases.
d. an increase in the use of pharmaceutical drugs in treating the elderly.
e. a reduction in the number of staffed beds in community hospitals causing a shortage of available beds.