The command set in option A is the correct one for configuring a Fibre Channel interface on the Cisco MDS 9000 Series Switch to meet the specified requirements. The "no switchport bit-errors" command ensures that the interface is disabled when the bit errors threshold is exceeded. The "switchport fcrxbbcredit 220 mode Fx" command sets buffer-to-buffer credits to their maximum value, ensuring optimal performance and flow control. Lastly, "no switchport rate-mode" ensures that the interface has full bandwidth allocated for its port group, maximizing data throughput and efficiency. References: * Cisco MDS 9000 Series Fabric Switches Configuration Guide * Cisco Data Center Core Technologies (DCCOR) study materials