In condensers used in thermal power plants, steam is normally used in shell side and cooling water on the tube side, because of the reason that

[A].	compared to the mass flow rate of cooling water, the rate of condensation of steam is invariably smaller.
[B].	maintaining vacuum on tube side is more difficult than that on the shell side.
[C].	water velocity can be increased conveniently to increase the overall heat transfer co-efficient because of its lower specific volume compared to steam.
[D].	condenser can act as a storage unit for condensed steam.

Answer: Option C

Explanation:

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