The diagram depicts a slide of a transverse section of a stem. The diagram is drawn at the same size as the actual slide. A student examined this slide with a light microscope at a magnification of $\times 40$. The student then produced a plan drawing of the stem, with a diameter of $20\ \text{cm}$. The student titled the plan ‘Transverse section of a stem $\times 40$’. Which statement explains why this label is incorrect?
- AThe actual size of the stem should have been checked using an eyepiece graticule.
- BThe actual size of the stem was smaller under low power.
- CThe image size in the drawing was larger than $\times 40$.
- DThe image size in the drawing was smaller than $\times 40$.