What should be entered into the $"$By Changing Variable Cells" box for Excel Solver?

C$4$:C$15$

C$16$

C$4$:C$16$

C$4$:C$14$

Question $12$

What should be entered into the "Subject to the Constraints" box for the upper$-$bounding capacity constraints?

C$4$:C$14>=$D$4$:D$14$

C$4$:C$14=0$

C$4$:CD$4$:D$14$

SUM$($C$4$:C$14)=0$

Question $13$

$7\mathrm{.}5p$

What should be entered into the "Subject to the Constraints" box for the $"$in $=$ out" flow constraints?

G$4$:G$10=0$

$14$:$110=0$

G$4$:G:$110$