The correct answer is: B. 100% and 120%.
Merrick’s multiple piece rate system is a type of incentive wage system in which workers are paid a piece rate for each unit of output they produce, with the piece rate increasing as output increases. Under this system, workers whose level of performance is between 100% and 120% of the standard output are paid 110% of the ordinary piece rate.
Option A is incorrect because it includes the range of 0% to 83%, which is not covered by Merrick’s multiple piece rate system. Option C is incorrect because it includes the range of 0% to 83%, which is not covered by Merrick’s multiple piece rate system. Option D is incorrect because it does not include any of the ranges that are covered by Merrick’s multiple piece rate system.