[单选题]
97.06: A charged rod72n*ku-g ka kxxw+zivh 97k.q l+k)v:j+v t. 7y9zkqp9p :atq-dozbq is placed between two insulated conducting spheres as shown. The spheres have no net charge. Region II has the sak7ko .a9v l:qt+) qy jq+ bpvp-zd:t9zme polarity as Region
A. I only
B. III only
C. IV only
D. I & III only
E. I & IV only