Consider the following sequence add $16, $1, $3 andi $12, $16,8 or $13, $6, $16 sub $14, $16, $12 sw $15, 100($16) Identify the data hazards present in the sequence U sub uses $16 before add writes it. or uses $16 before and writes it. add writes $16 after andi uses it. add writes $16 after sw uses it. sub uses $12 before andi writes it. andi writes $12 after sub uses it. andi writes $12 after sub uses it. add writes $16 before sub uses it