A review of ABC Corporation's accounting records found that at a volume of 80,000 units, the variable and fixed cost per unit amounted to $7 and $6, respectively. What is ABC's cost function based on this information? O y-$480,000+ $6(x) O y=$1,040,000 + $7(x) Oy-$480,000+ $7(x) None of the answers are correct O y=$6+ $7(x) Oy-$560,000+ $6(x)