This figure has rock units and geologic features that are assigned letters that are not in any particular order.From the geologic relations,what is the oldest unit or feature of those listed below? 
Definitions:
Variable Production Cost
Costs that fluctuate with the production volume, including variable manufacturing overhead, direct materials, and direct labor.
Fixed Production Cost
Costs that do not vary with the level of output, such as salaries, rent, and depreciation of production facilities.
Selling & Admin. Expense
Operating expenses related to selling the product and managing the business, excluding production costs.
Break-Even Point
The level of production or sales at which total revenues equal total expenses, resulting in no profit or loss.
Q5: Which of the letters shown on this
Q18: The principle of isostasy was discovered by
Q18: Which of the following times indicates a
Q40: Which of the following is true about
Q50: What texture is displayed by the igneous
Q56: Imbricated clasts in this river means that:
Q60: Which of the following does NOT help
Q67: What mineral property is illustrated by this
Q97: Which of the following environments would likely
Q98: The main cause of melting along subduction