Which of the following statements is correct regarding a myelinated nerve fibre? (i) It is alway...

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Which of the following statements is correct regarding a myelinated nerve fibre?
(i) It is always associated with an axon.
(ii) Itallows rapid conduction of nerve impulses.
(iii) It allows slow conduction of nerve impulses.
(iv) It has nodes of Ranvier.
(A) Only (i) and (ii)
(B) Only (i), (ii), and (iii)
(C) Only (i), (ii), and (iv)
(D) Only (i), (iii), and (iv)
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