When a fire breaks out in the box and the fire extinguishing device releases the fire extinguishing agent into the protection area, ( ) will display the words "In The Vent, Do Not Enter".

When a fire breaks out in the box and the fire extinguishing device releases the fire extinguishing agent into the protection area, ( ) will display the words "In The Vent, Do Not Enter".
A . Fire alarm
B . Sound and light alarm
C . Deflation indicator light
D . Emergency Lights

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Answer: C