From a diagram similar to

Clock

Iw $$$1,24($$$$0)$

lw $$$2,28($$$$0)$

add $$$3,$$$$2,$$$$1$

sw $$$3,32($$$$0)$

Given that forwarding is implemented, choose the correct value of the CPI for the sequence.

$2\mathrm{.}25$

$2\mathrm{.}5$

$20$

None of the above