The diagram depicts a stage micrometer with small divisions of $0.1\,\text{mm}$ viewed through an eyepiece fitted with a graticule. The stage micrometer is then exchanged for a slide of a plant cell. What is the width of a chloroplast?
- A$0.5\,\text{mm}$
- B$10\,\mu\text{m}$
- C$50\,\mu\text{m}$
- D$100\,\mu\text{m}$