Study the following statements on cilium or flagellum and choose the correct option. (i) Cilium / flagellum contains an outer ring of nine doublet microtubules surrounding two singlet microtubules. (ii) Cilia are smaller which work like oars, causing the movement of either the cells or surrounding fluid. (iii) Flagella are comparatively longer and responsible for cell movement. (iv) Cilium and flagellum are covered with plasma membrane.

• A. (i) and (ii)
• B. (i), (ii), (iii) and (iv)
• C. (i) and (iv)
• D. (ii) and (iii)