$\backslash$table$[[$ACTIVITY$,$IMMEDIATE,PREDECESSOR,TIME,$($WEEKS$)],[$A$,,-,,8],[$B$,,$A$,,10],[$C$,,$A$,,6],[$D$,,$B$,,5],[$E$,,$B$,,10],[$F$,,$D$,,8],[$G$,,$C$,$ E$,,5],[$H$,,F,G,,10],[$I$,,G,H,,9]]$

a$.$ What is the early start date for activity $H?$

ES for $H$