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Refer the following statement and answer the question. 'Name of X is derived from stinging capsules. It exhibits metagenesis containing two body forms in which sessile and cylindrical form is called Y and umbrella shaped and free swimming is called Z. Identify X, Y, and Z.

A. X - Coelenterate, Y - Polyp, Z - Medusa

B. X - Cnidarian, Y - Medusa, Z - Polyp

C. X - Ctenophora, Y - Radula, Z - Hypostome

D. X - Porifera, Y - Osculum, Z - Radula

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