[单选题]
The distance betweenno0zhj,:mil- ;oq /d+ r9lpjn adjacent5wtgkqww3,yg yw k6 3 /ypd4x- orbit 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.