The baseball team needs new equipment. Company A can provide 9 helmets, 6 bats, and 12 balls for $525. Company B can provide 10 helmets, 8 bats, and 10 balls for $600. Company C can provide 8 helmets, 5 bats, and 15 balls for $500. Which system of equations matches the equipment choices available for purchase? 9x + 6y + 12z = 525 10x + 8y + 10z = 600 8x + 5y + 15z = 500 9x + 12y + 6z = 525 10x + 8y + 10z = 600 8x + 5y + 15z = 500 9x + 6y + 12z = 525 10x + 10y + 8z = 600 8x + 5y + 15z = 500 9x + 6y + 12z = 525 10x + 8y + 10z = 600 8x + 15y + 5z = 500