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Given below is a diagrammatic cross section of a single loop of human cochlea.

Which one of the following options correctly. represents the names of three different parts?
(a) B : Tectorial membrane
     C: Perilymph
     D : Secretory cells

(b) C: Endolymph
     D : Sensory hair celis
     A: Serum

(c) D: Sensory hair cells
     A: Endolymph
     B: Tectorial membrane

(d) A : Perilymph
     B: Tectorial membrane
     C: Endolymph