Identify all the RAW data dependencies in the following code. Which dependencies are data hazards that will be resolved by forwarding? Which dependencies are data hazards that will cause a stall? Using a graphical representation of the pipeline, show the forwarding paths and stalled cycles if any.

add $3, $4, $2

sub $5, $3, $1

lw $6, 200($3)

add $7, $3, $6