Which sentence corrects the shift of voice in the following sentence?
While glancing through the microscope lenses, numerous minuscule creatures could be seen by the students.
A.
While glancing through the microscope lenses, the students saw numerous minuscule creatures.
B.
While the students glanced through the microscope lenses, numerous minuscule creatures could be seen.
C.
While glancing through the microscope lenses, numerous minuscule creatures were seen by the students.
D.
While the students were able to glance through the microscope lenses, they saw numerous minuscule creatures