Which statement concerning the light microscope is correct?
- AAs the smallest distance to see two points as distinct separate points decreases, the resolution also decreases.
- BIf the resolution is $220\,\text{nm}$, then a bacterium $0.2\,\mu\text{m}$ in diameter will not be visible.
- CIf the wavelength of light is $600\,\text{nm}$, then two membranes $300\,\text{nm}$ apart will be visible as two distinct membranes.
- DUsing visible light of a longer wavelength, such as red light, will improve the resolution.