Question: n CPU pipelining, what does forwarding refer to ? Reversing the direction of data flow in the pipeline. Sending data directly from the execution stage

n CPU pipelining, what does "forwarding" refer to?
Reversing the direction of data flow in the pipeline.
Sending data directly from the execution stage to the fetch stage.
Reducing stalls by directly transmitting data from one pipeline stage to another.
Passing instructions to the next stage of the pipeline.

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