Which of the following pairs is mismatched?

The $GERL$ system was proposed by:

$A$ student wants to study cell structure using a light microscope with a $10 \times$ eyepiece and a $45 \times$ objective lens. Which of the following light sources should they use to obtain the best resolution?

Which of the following statements is/are correct?
$(i)$ The shape of the cells may vary with the function they perform.
$(ii)$ Human $RBC$ is about $7.0 \; \mu m$ in diameter.
$(iii)$ Cytoplasm is the main area of cellular activities.
$(iv)$ Various chemical reactions occur in cytoplasm to keep the cell in the living state.

The term $informosome$ is used for .......

The following diagram shows a plant cell with some structures marked as $A, B, C, D$ and $E$. Choose the option with their correct names.