Which of the following is NOT a major challenge of remanufacturing? A. HIGH VARIABILITY IN QUALITY OF RETURNED CORES B. TRACING PRODUCTS THROUGHOUT THEIR LIFE-CYCLE C. THE COST OF MANUFACTURING VIS A VIS DEMAAND FOR MANUFACTURED PRODUCTS MAY NOT MAKE ECONOMIC SENSE D. OFTEN FIRMS MAY NOT POSSESS THE REQUIRED KNOW HOW FOR MANUFACTURIGN USED PRODUCTS