Select the correct option for the size of the chloroplast.

• A
  Length $- 5$ to $10 \mu m$,Width $- 2$ to $4 \mu m$
• B
  Length $- 2$ to $4 \mu m$,Width $- 5$ to $10 \mu m$
• C
  Length $- 5$ to $10 \, nm$,Width $- 2$ to $4 \, nm$
• D
  Length $- 2$ to $4 \, nm$,Width $- 5$ to $10 \, nm$