How does a switch handle a frame in which it detects an error in the frame check sequence?

How does a switch handle a frame in which it detects an error in the frame check sequence?
A . It discards the damaged frame without further action
B . It updates the frame check sequence and forwards the frame to its destination
C . It discards the damaged frame and requests the sender to retransmit it
D . It forwards the frame to its destination unchanged

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Answer: B