Given the following 5-stages MIPS pipeline. Assume no forwarding: 1 2 3 4 5 6 7 8 9 10 11 12 F D M w F lw $10, 0($11) add $9, $11, $10 sub $8. $10, $7 sw $7, 4($8) Calculate the CPI for the given sequence of instructions: lw, add, sub, sw? O 2.0 O 1.25 O 2.75 O 1.75 Calculate the CPI for the given instructions if the sequence becomes: lw, sub, add, sw? O 1.0 O 1.75 01.25 0 2.75 What is the number of pipeline fill cycles? O 7 O4 O 12 O 5 What type of pipeline hazard exists between these four instructions? O Data Hazard O Strucural Hazard O Control Hazard O Data and Control Hazard