Answer all the following :by select True or False? Each one 2.5 marks. A) The average cost is refers to the total cost of an output or input divided by the total output or activity in units. B) MC is equal the changes in cost and change in quanitiy. C) In term of cost production and non-production are not affect on cost's clasification. D) Normal profit is not affective on company competives in the petrolume-industrails. E) In terms of sensitivity analysis, it does not require to show or test all situation of cases of stable or non-stable for any investment? F) Depreciation for assets in petroleum industries always does not required or depend on its analysis & accounting procedures on historical information of level cost for that assets.