Which of the following sentence(s) can help you figure out the meaning of “ambivalent”?

A.…this means that the public needs to have a basic understanding of science, so that it can make informed decisions and not leave them in the hands of experts.
B.It has come to expect the steady increase in the standard of living that new developments in science and technology have brought to continue.
C.But it also distrusts science because it doesn't understand it.
D.Both B and C.