4) Delgado makes and sells a single product called a Thing 1. The company is in the process of preparing its Selling and Administrative Expense Budget for the last quarter of the year. The following budget data are available: Variable Cost Per Monthly thing 1 Sold Fixed Cost Sales commissions $ 5.90 Shipping 5 5.30 Advertising 5 8.90 $ 32,000 Executive salaries $ 1?8,000 Depreciation on office equipment 5 7,000 Other $ 0.60 $ 20,000 All of these expenses (except depreciation) are paid in cash in the month they are incurred. If the total budgeted selling and administrative expense for October is $518,520, then how many Thing 18 does the company plan to sell in October? A) 13,300 units B) 14,100 units C) 13,800 units D) 13,600 units