[单选题]
For a diatomic quantum mechanicabm0:):m ez ko; egwll*l vibrator, the energy difference *xde wlc7a7 1 p47 gv(-yy;qz 4zdtsoabetween adjacent qu(lsw dez4 -cx* yzaa7g;4 vd7y7pq ot1antum states
A. increases as v increases.
B. decreases as v increases.
C. is constant for all values of v.
D. varies randomly as v increases.