Which of the following statements about access and health policy in the $20$th century is$/$are TRUE?

a$)$ During the end of the $20$th century USA health policy focused on cost control, disparities, and uninsured

b$)$ Scientific and technological advancement that increased cost resulted in decreased access

c$)$ Scientific and technological advancements provided higher quality services and resulted in increased demand

d$)$ The norm of possession of medical insurance equating to access to healthcare services developed

e$)$ All of the above