a$)$ For the sixth column labeled "Immediate Predecessor$($s$)"$ in Table $1$ in Question $7,$ select the correct immediate predecessor for task $C.$

b$)$ For the sixth column laheled "Immediate Predecessor$($s$)"$ in Table $1$ in Question $7,$ select the correct immediate predecessor for task D$.$

c$)$ For the sixth column labeled "Immediate Predecessor$($s$)"$ in Table $1$ in Question $7,$ select the correct immediate predecessor$($s$)$ for task $E.$