NEET Biology question

Read the given statements and select the correct option. (i) Synaptic cleft of neurons secretes adrenaline (ii) Myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon (iii) Non-myelinated nerve fibre is enclosed by a Schwann cell that does not form a myelin sheath (iv) Spinal and cranial nerves are made of non-myelinated nerve fibres

• (A)Statements (i) and (ii) are correct but statements (iii) and (iv) are incorrect
• (B)Statements (i), (ii) and (iii) are correct but statement (iv) is incorrect
• (C)Statements (iii) and (iv) are correct but statements (i) and (ii) are incorrect
• (D)Statements (ii) and (iii) are correct but statements (i) and (iv) are incorrectCorrect