DEPRECATED Representing relationships with matrices

Problem

After Halloween, Jerome and Trudy compare the various candies they've received. Jerome has 10 chocolate candies and 7 hard candies. Trudy has 3 chocolate candies and 21 hard candies. The data for this can be encoded in the following candy matrix:
C=[107321]\qquad C = \left[ \begin{array}{cc} 10 & 7 \\ 3 & 21 \\ \end{array} \right]
Which statements are true about the above matrix?
Select all that apply.
    Select all that apply.