What is the primary difference between a fail-safe and a fail-secure electrified lock?
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A
Fail-safe locks require a key to open; fail-secure locks do not
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B
Fail-safe locks are unlocked when power is lost; fail-secure locks remain locked when power is lost
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C
Fail-safe locks are used outdoors; fail-secure locks are used indoors
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D
Fail-safe locks are cheaper than fail-secure locks