The art club is selling their handmade jewelry to raise money for new paints and brushes. Earrings were sold for $6 a pair and necklaces were sold for $12.50 each. They sold a total of 30 items and made $264.50.

Which system of equations best represents the situation above?

Note: In all of the choices below, e represents money earned, p represents price, and n represents number of items sold.

a
Earrings: e=6(30-n)
Necklaces: 264.50-e=12.50*n

b
Earrings: e=12.50(30-n)
Necklaces: 264.50-e=6*n

c
Earrings: e=6(n-30)
Necklaces: e-264.50=12.50*n

d
Earrings: e=30-n
Necklaces: 264.50-e=n