Table of Crashing Decision

$\backslash$table$[[,$TIME $($WEEKS$),$COST $($$$)],[$ACTIVITY$,$IMMEDIATE,NORMAL,CRASH,NORMAL,CRASH$],[$P$,$cdots,$3,2,3,000,3,300],[$B$,$cdots,$6,4,8,000,9,000],[$C$,$A$,1,1,4,000,4,000],[,,,,,],[$D$,$A$,5,4,3,500,4,000],[$E$,$B$,4,3,4,750,5,500],[$F$,$C$,2,2,2,000,2,000],[,,,,,],[$G$,$D$,1,1,4,000,4,000],[$H$,$D$,$F$,3,2,3,500,3,750],[$I$,$E$,$G$,3,2,3,000,4,250],[$J$,$E$,2,1,5,000,7,000]]$

Since no indirect cost nor penaly cost information is offered, please consider the schedule and crash cost issues only,

Using Table of Crashing Decision, if the project completion time has to be reduced by one week, which of the following activities should be crashed to minimize the extra cost of earlier completion?

Activity $H$

Activity J

Activity B

Activity E