When Performing an Ocular Micrometer Calibration Procedure for the 40x

When performing an ocular micrometer calibration procedure for the 40x objective, the technologist noted that the 40 mark on the ocular micrometer scale lined up exactly with the 0.09-mm line on the stage micrometer scale. The width in millimeters for each ocular scale division is:

A) 0.09 mm
B) 0.00225 mm
C) 2.25 µm
D) 40 µm