If a switch uses the store and forward method of switching and receives a frame in which its CRC is invalid, what will happen?

A. The switch will re-create the frame with a new CRC and correct the missing information.
B. The switch will drop the frame and wait for retransmission of a new frame.
C. The switch will send back a frame for retransmission of the frame.
D. The switch will store the frame until a new frame with a matching CRC is received.

B. The store and forward method of switching allows the switch to receive the entire frame and calculate the CRC against the data contained in the frame. If the CRC does not match, the frame is dropped, and the sending node must retransmit after an expiry timer or upper-protocol timer times out.