Which action ensures lower labor costs per pair at a production facility?

Increasing total employee compensation by 4% and realizing a 6% increase in production worker productivity

Increasing total expenditures for best practices training by 10% annually

Increasing the base wage paid to production workers by at least 3% annually

Reducing the S/Q rating of branded pairs produced for 4.6 stars to 4.1 stars

Increasing spending for TQM/Six Sigma quality control from $3 per pair to $5 per pair