Which flag in a configuration BPDU instructs all switches to shorten their bridge table aging process from the default 300 seconds to the current forward delay value?

Which flag in a configuration BPDU instructs all switches to shorten their bridge table aging process from the default 300 seconds to the current forward delay value?
A . topology change bit
B . topology change acknowledgment bit
C . priority bit
D . max-age bit

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Answer: A