Which design benefit of bridge assurance is true?

Which design benefit of bridge assurance is true?
A . It supposes a spanning-tee topology change upon connecting and disconnecting a station on a port
B . It prevents switched traffic from traversing suboptimal paths on the network.
C . It allows small, unmanaged switches to be plugged into ports of access switches without the risk of switch loops.
D . It prevents switch loops caused by unidirectional point-to-point link condition on Rapid PVST + and MST

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Answer: D