During the maintenance of PowerScale nodes, what is a Field Replaceable Unit (FRU)?

During the maintenance of PowerScale nodes, what is a Field Replaceable Unit (FRU)?
A . A component that can be replaced without sending the entire unit for repair
B . A software module that can be updated independently
C . A node that can be swapped with another in the cluster without downtime
D . An external device that enhances the node’s capabilities

Answer: A