In contrast to accredited universities that can grant degrees and whose students can be eligible for federal aid, nonaccredited colleges, while still able to enroll students and to provide instruction, cannot provide their students with the same types of services.

A) nonaccredited colleges, while still able to enroll students and to provide instruction, cannot provide their students with the same types of services

B) nonaccredited colleges cannot provide their students with the same types of services, though still able to enroll students and provide instruction

C) enrolling students and providing instruction, while unable to provide their students with the same types of services, are nonaccredited colleges

D) the services of nonaccredited colleges, while including the ability to enroll students and provide instruction, do not include the same types of services

E) those of nonaccredited colleges include enrolling students and providing instruction, but not the same types of services

OA is A.

B is wrong because "though still able to enroll students and provide instruction" wrongly modifies instruction, rather it should modify colleges. So it should be placed near accredited colleges. But isn't the same issue with Option A as well. Can you please help me understand how the modifier work in A and B.