[单选题]
The energy difference betw2 j*rnpnvgc+bj /*mq/een adjacent orbnz 0qw+acu+a :3wjb0i e+ (hquit radii in a hydrogen atom
A. increases with increasing values of n.
B. decreases with increasing values of n.
C. remains constant for all values of n.
D. varies randomly with increasing values of n.