How is this reference from the Occupational Health and Safety Act read?

$"25(3)($b$)($i$)"$

Question $15$ options:

Subsection b clause i

Section $25,$ Subsection $3,$ Clause b$/$i

Section $25,$ Subsection $3,$ Clause b$,$ Subclause i

Section $25,$ Subsection $3,$ Subclause b$-$i