2). (12.5 pts). Operating Costs A). Define a fixed operating cost and cite an example. B). Define a variable operating cost and cite an example. C). Define and compare a C1, C2 C3 and an All In Sustaining Cost (AISC). l). A mineral processing plant is treating an ore that contains 0.5 % copper. The recovery of copper is 85 %. If the operating cost per tonne is $ 10.00 USD per tonne treated, what is the; a. the operating cost per pound of copper treated? b. the operating cost per pound of copper recovered? c. most accurate cost of the three operating cost scenarios? E). List two (2) ways to best lower the operating cost per pound of copper recovered? (One Hint: Economy of Scale)