A graticule and a micrometer scale can be used to determine the size of biological structures that are observed with a microscope. Which row indicates the correct positions for putting a graticule and a micrometer scale on the microscope shown?
- Agraticule 1, micrometer scale 2
- Bgraticule 1, micrometer scale 3
- Cgraticule 2, micrometer scale 3
- Dgraticule 3, micrometer scale 1