6. Furniture, Inc. estimates the following number of mattress sales for the first four months of 2019 Month Sales January 5.000 February 7,000 March 6500 April 8.000 Finished goods inventory at the end of December is 1.500 units. Required ending finished goods inventory is 30% of next months sales. Mattresses to be produced in January 2019 is? A 4,400 mattress B: 5.600 mattresses C 6500 mattresses 0.7.100 mattresses