Assume that the following code is executed.

sub $$2,$ $$3,$ $$4$

and $$12,$ $$2,$ $$4$

or $$5,$ $$6,$ $$7$

$1.$ Write the type of data hazard detected by the forwarding unit and the conditions for detecting the hazard.

$2.$ When the code above is executed, write the multiplexer control signals by forwarding unit.