You are adding new wires in your building for some new offices. The building has a false ceiling that holds the lights and provides an air path for heating and air conditioning. You would like to run your Ethernet cables in this area.

Plenum rate cable.  

Explanation:

The Plenum rated cable has an unique coating with the low fire resistance and smoke. The main reason to used the Plenum rate cable in the office because it allowing the intense cooling of the  servers also  for the safety purpose we used the Plenum rate cable.  

In the office we used Plenum rate cable wires because The house has a false ceiling housing the lights and supplying air-conditioning and ventilation routes.

the answer is a

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answer(a) occurs after your prediction;