Determine which situation could be represented by the system of linear equations given below.

a.
an audience contains 210 people. student tickets cost $3 each and adult tickets cost $5 each. at one performance, there are 60 more adults than students.
b.
a candy story sells boxes of chocolates for $5 each and boxes of caramels for $3 each. in one afternoon, the store sold 210 boxes of candy and made a profit of $60.
c.
an art teacher bought paintbrushes in packs of 5 and packs of 3. she bought a total of 60 packs and now has 210 paintbrushes.
d.
a guitar requires 5 strings and a banjo requires 3 strings. an orchestra has a total of 210 strings. one guitar player and one banjo player have 60 strings.