6) When grouping data in recurring and non-recurring costs, which of the following is not a non-recurring cost? [Describe different methods to normalize data (e.g., grouping into homogeneous data groups, inflation, and quantity adjustments).] [Remediation Accessed :N] Engineering required for redesign, modifications, reliability, maintainability, and associated evaluation O Basic tool and production planning through initial release OAll basic tooling, engineering models, partially built units for development or test purposes only and units not built to operational configuration O Specialized work force training