Most of the Cells in the Human Body (Your Blood

Most of the cells in the human body (your blood cells,for example) are

A) smaller than a mitochondrion,but larger than most molecules.
B) smaller than small molecules,but larger than an atom.
C) smaller than the period at the end of this sentence,but larger than most bacteria.
D) about the size of the period at the end of this sentence.
E) larger than the period at the end of this sentence,but smaller than the width of one of your hairs.