7. Which of the following statements about light microscopy is incorrect?(A) The resolution of a light microscope improves with the use of shorter wavelengths of light.(B) Objectives with larger numerical apertures (NA) generally provide greater resolution but have smaller working distances.(C) Immersion oil enhances resolution by increasing the refractive index between the specimen and the objective lens.(D) Parfocal microscopes require substantial refocusing when switching between objectives.(E) Numerical aperture (NA) directly influences the resolving power of a microscope.