[单选题]
A microscope has an objective lens ok/ewer 6c4jfw8t3 2i m7,opf uf focal length xs ,7ev/kyl9p 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. What is the overall magnifiyxps/e 97k, vlcation?
