The decision variables are defined $as$ follows:

Below select which $of$ the following constraints must $be$ included $in$ the correct formulation:

Group $of$ answer choices

The decision variables are defined $as$ follows:

$x_i=$ number $of$ copies $of$ book $i=1,2,$dots,$5to$ produce

$y_i=\{\begin{array}{ccc}1& if\text{b}\text{o}\text{o}\text{k}iischosen\text{f}\text{o}\text{r}\text{p}\text{r}\text{o}\text{d}\text{u}\text{c}\text{t}\text{i}\text{o}\text{n}& \\ 0& if\text{b}\text{o}\text{o}\text{k}iis\text{n}\text{o}\text{t}chosen\text{f}\text{o}\text{r}\text{p}\text{r}\text{o}\text{d}\text{u}\text{c}\text{t}\text{i}\text{o}\text{n}& \end{array}$

Using the above decision variables, the correct

objective function $is$:

max${\displaystyle \underset{i=1}{\overset{5}{}}}(P_i-C_i)x_i$

min${\displaystyle \underset{i=1}{\overset{5}{}}}{C}_i{x}_i+{\displaystyle \underset{i=1}{\overset{5}{}}}{F}_i{y}_i$

max${\displaystyle \underset{i=1}{\overset{5}{}}}(P_i-C_i)x_i-{\displaystyle \underset{i=1}{\overset{5}{}}}{F}_i{y}_i$

None $of$ the above