Hatfield Corporation, which has only one product, has provided the following data concerning its most recent month of operations: Selling price $123 Units in beginning inventory 0 Units produced 6,400 Units sold 6,100 Units in ending inventory 300 Variable costs per unit: Direct materials $45 Direct labor $30 Variable manufacturing overhead $1 Variable selling and administrative $8 Fixed costs: Fixed manufacturing overhead $140,800 Fixed selling and administrative $91,500 The total contribution margin for the month under variable costing is:
a) $237,900
b) $97,100
c) $152,500
d) $286,700