15 (a) Identify and explain all data hazards (including hazard type and each operand pair that causes the hazard) in the execution of the following (5) MIPS instructions (please use split-cycle memory RAW for main memory and instruction memory): add $s1, $s2, $s3 add $s2, $s1, $s3 beq $s1, $s2, Oops sw $s1, 24 ($s1) (b) Draw the IF-ID-EX-MEM-WB pipeline diagram to show these data (5) hazards and the solutions. (c) How many cycles are required to execute these four instructions? Given (5) this information, calculate the CPI of this program on this pipeline.