Given the following code, what hazards occur?

$1w$$$s1,0($$$s0)$

$1w$$$s2,4($$$s0)$

add $$53,$$$51,$$$s2$

sw $s$3,12($$$50)$

Iw $$s4,8($$$s0)$

add $$s5,$$$s1,$$$s4$

Structure Hazards

None of these.

Data Hazards

Control Hazards