R.B.S. sells a small device used in manufacturing cars and provided you with the following information: \begin{tabular}{l|lr} Selling price & $ & 18.00 per unit \\ Variable production cost & $ & 4.00 per unit \\ Variable selling costs & $ & 2.00 per unit \end{tabular} Fixed production costs (total) $15,000.00 Fixed administrative costs (total) $12,000.00 The company currently earns an operating income of $30,000 Required 1- Calculate the number of units currently sold to achieve the operating income of $30,000. 2- Calculate the margin of safety in units that R.B.S. currently has