Which statement or statements is/are correct regarding Managed care: (Level 2)

Group of answer choices

a. It experienced its period of most rapid growth in the mid-1980s

b. It increased to 1700 HMOs that served 40 million members by 1976

c. It directly contacted employers and urged them to switch to managed care beginning in 1965 when Medicare/Medicaid were passed

d. All of the above

e. None of the above