E. Coli have rod-shaped cells that closely resemble cylinders. Which size E. Coli cell (measured in m)

E. Coli have rod-shaped cells that closely resemble cylinders. Which size E. Coli cell (measured in μm) would be most metabolically efficient?
(A) Radius = 0.5, height = 1.5
(B) Radius = 0.5, height = 2
(C) Radius = 1, height = 3
(D) Radius = 1, height = 4