In a typical sales report, which types of numerical operations are usually performed? Select one: a. Sum the sales, product cost, aggregate by quarter, rank or sort b. Aggregate by category, show category's sales as percentage of quarter sales, sum sales by quarter, show total expenses by amoun ranking c. Aggregate by category, aggregate by quarter, count of inventory, show category's sales as percentage of quarter sales d. Sum the sales, aggregate by category, aggregate by quarter, show category's sales as percentage of quarter sales