thE tABlE BElow shows thE EnrollmEnt in vArious ClAssEs At A CErtAin CollEgE.

ClAss0	numBEr oF stuDEnts
BioloBy	50
physiCs	35
CAlCulus	40

Although no stuDEnt is EnrollED in All thrEE ClAssEs, 15 ArE EnrollED in BothBiology AnD physiCs, 10 ArE EnrollED in BothBiology AnDCAlCulus, AnD 12 ArE EnrollED in Both physiCs AnDCAlCulus. how mAny DiFFErEnt stuDEnts ArE in thE thrEE ClAssEs
A、51
B、88
C、90
D、125
E、162