If the Objective Lens of a Compound Microscope Is Replaced

Multiple Choice

If the objective lens of a compound microscope is replaced with a lens of double the focal length while the eyepiece also has its focal length doubled,what will happen to the overall magnification of the microscope?

A) This will result in no change in the magnification.
B) The magnification doubles.
C) The magnification quadruples.
D) The magnification decreases.