Based on the pipeline design with forwarding unit: 1) lw $t0, 4($50) 2) add $t3, $t1,$t2 3) sub $t4, $t2, $to 4) lw $t1, 8($SO) 5) add $t1,$t0, 14 How many clock cycle do we need to execute this code (assume it is a full program)? Select one: O a. 9 b. 10 c.5 d. 11 o e. 6