[BRAINLIEST] To manufacture an automobile requires painting, drying, and polishing. Epsilon Motor Company produces three types of cars, the Delta, the Beta, and the Sigma. Each Delta requires 21 hours for painting, 5 hours for drying, and 3 hours for polishing. A Beta requires 29 hours for painting, 7 hours for drying, and 4 hours for polishing, and a Sigma requires 8 hours for painting, 4 for drying, and 4 for polishing. If the company has 391 hours for painting, 121 hours for drying, and 92 hours for polishing per month, how many of each type of car are produced?