Day Company is a medium-sized manufacturer of lamps. Last year a new lamp called "Twilight" was made available to Day's customers. The break-even point for sales of Twilight was $400,000 with a contribution margin ratio of 40%. Based on this information if the net profit for the Twilight line amounted to $200,000, total sales must have been: Select one: a. $600,000. b. $840,000. $900,000. $950,000