According to Fries and Crapo sound health choices should be based on

A．In programmed research scientists have a supposed program to go by.
B．Government departments apply programmed research on an increasing scale nowadays.
C．Applied science and pure science rely on each other.
D．Private industrial departments are not a little interested in long-term research.

A．because no government would prefer.
B．because there were no industrial research organization.
C．and scientist were allowed complete freedom to do the research they want to.
D．in which insufficient equipment and instruments were available.