60. A microscope has an objective lens with an aperture diameter of 2.6 mm and a focal length of 5.0 mm. The sample is illuminated with monochromatic light of wavelength 520 nm. Considering the diffraction limit, which of the following is closest to the minimum resolvable distance between two points?
(A) 0.4 µm
(B) 0.5 µm
(C) 0.8 µm
(D) 1.2 µm
(E) 2.0 µµm

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統計： A(0), B(0), C(0), D(1), E(0) #3847836