True or false

A. Postponement allows a supply chain to delay differentiation --- this comes with the inherent benefit of lower safety stock, but on the flip-side product availability also suffers. B. For a company, a slow inventory turnover implies weak sales and possibly excess inventory, while a faster ratio implies either strong sales or insufficient inventory. C. An Aggregate Plan balances the trade-offs between cost of capacity, cost of inventory and cost of stockouts to maximize profitability. D. A demand forecast based on a projection from historical data assumes that there are no new influences on the market. E. During Covid, companies seeking to boost supply chain resilience ended up boosting inventories versus increasing near shoring as it is quicker to build inventories than factories. F. Newsvendor is a useful model framework for planning inventories for products without a shelf-life G. Supply Chain disruptions during Covid were exacerbated because of a lack of visibility/understanding of Suppliers beyound Tier2