Consider the following execution in a processor with forwarding implemented, and with stall penalty of one clock cycle. Assume [$S1] is not zero. Clock Iw \$S1, 24 (\$Zero) beq \$S1, \$Zero, SOMEWHERE add $S3,$S2,$1 sw $S3,32($S2) The total number of stalls for the sequence is 2 3 1 None of the above