An advertising project manager has developed a program for a new advertising campaign. In addition, the manager has gathered the time information for each activity as shown in the following table:

$\backslash$table$[[$Time Estimates $($week$)],[$Activity$,$Optimistic,$\backslash$table$[[$Most$],[$Likely$]],$Pessimistic,$\backslash$table$[[$Immediate$],[$Predecessor$($s$)]]],[$A$,1,4,7,-],[$B$,2,6,10,-],[$c$,3,3,9,$B$],[$D$,6,13,14,$A$],[$E$,4,6,14,A,C$