A student was calibrating the scale on an eyepiece graticule in the eyepiece lens of a light microscope. A stage micrometer scale was supplied for use. The divisions on the stage micrometer scale were $0.1\ \text{mm}$ apart. Which data does the student need to collect to calibrate the eyepiece graticule?
- A1 and 3
- B2 and 3
- C2 only
- D3 only