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Match the bioreactor components in Group I with the most appropriate function given in Group II.

Group I Group II

P. Marine type impeller 1. Recirculation of medium

Q. Draft tube 2. Aeration of medium

R. Diaphragm valve 3. Animal cell cultivation

S. Sparger 4. Sterile operation

A. P-4, Q-2, R-1, S-3

B. P-3, Q-1, R-4, S-2

C. P-3, Q-4, R-2, S-1

D. P-2, Q-1, R-4, S-3

Answer: Option B

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