Choice "B" is correct. The Blankie company would conclude that its quality program has been a success because its conformance costs (preventative and appraisal costs) increased less than its nonconformance costs (internal and external failure costs) decreased. The investment in preventative and appraisal measures has efficiently reduced the time and costs invested in error correction.Choice "d" is incorrect. The proposed solution inaccurately identifies the listed costs as either conformance or nonconformance. Appraisal and prevention costs are conformance costs while internal and external failure costs are nonconformance costs. Note that a decrease in conformance costs and an increase in nonconformance costs would indicate a failed program.Choice "a" is incorrect. The proposed solution inaccurately identifies the listed costs as either conformance or non conformance.  Appraisal and prevention costs are conformance costs while internal and external failure costs are nonconformance costs. In addition, the conclusions about the relationships between costs is incorrect. A decrease in conformance costs and an increase in nonconformance costs would indicate a failed program.Choice "c" is incorrect. An increase in conformance costs and a decrease in non conformance costs indicates success, not failure of a quality program. Management would be more concerned if nonconformance costs were increasing.