Determine the direct material quantity variance $1, 672.50 favorable $3, 172.50 unfavorable $577.50 favorable $2, 250.00 unfavorable Managers can use which of the following cost-plus methods to determine selling prices? Total cost concept Variable cost concept Product cost concept All of these choices are correct. Bright Times Company has a table lamp segment that has been losing money for the last year and is considering closing that segment. This year's revenue was $78,000, with variable costs of $50,000, and fixed costs of $40,000. Determine the differential income or loss from the table lamp segment and whether the segment should be discontinued. Differential income $78,000; segment should be continued. Differential income, $28,000; segment should be continued. Differential loss $90,000; segment should be discontinued. Differential loss $12,000; segment should be discontinued