A software company is selling a new game in a

standard edition and a collector's edition. The box

for the standard edition has a volume of 20 cubic

inches, and the box for the collector's edition has a

volume of 30 cubic inches. The company receives an order for 75 copies of the game, and the total volume

of the order to be shipped is $1,870$ cubic inches.

Which of the following systems of equations can be

used to determine the number of standard edition

games, $s,$ and collector's edition games, $c,$ that were

ordered?

\begin{equation}

\begin{aligned} \text { A) } \quad & 75-s=c \\ 20 s+30 c &=1,870 \\ \text { B) } & 75-s=c \\ & 30 s+20 c=1,870 \end{aligned}

\end{equation}

\begin{equation}

\begin{array}{c}{\text { C) } \quad s-c=75} \\ {25(s+c)=1,870} \\ {\text { D) } \quad s-c=75} \\ {30 s+20 c=1,870}\end{array}

\end{equation}