The Dimensions of Living Cells Are Limited, on the Lower $\mu$

The dimensions of living cells are limited, on the lower end by the minimum number of biomolecules necessary for function, and on the upper end by the rate of diffusion of solutes such as oxygen. Except for highly elongated cells, they usually have lengths and diameters in the range of:

A) 0.1 $\mu$ m to 10 $\mu$ m.
B) 0.3 $\mu$ m to 30 $\mu$ m.
C) 0.3 $\mu$ m to 100 $\mu$ m.
D) 1 $\mu$ m to 100 $\mu$ m.
E) 1 $\mu$ m to 300 $\mu$ m.