Determine which of these cells has the largest problems due to surface area limitations.
A) A normal B) An amoeba cell in a lake may be 0.50 millimeters, variable in shape with many long, narrow extensions of the cell. C) A human egg cell is often 0.13 millimeters, and is spherical in shape. D) An epithelial cell lining any mammal arteries may be 0.03 millimeters, and has a very flat shape. E) coli fecal cell in the digestive tract of animals may be 0.003 millimeters, in a rounded rod or cylinder shape.