True or False? No explanation needed. But please try your best. Will give excellent ratings if you answer each one :)

(r) Changing to vendor-managed inventory typically reduces total supply chain costs. However, in some cases it will increase costs for the supplier, at least initially.

(s) Under uncertainty, maximizing expected profit is always the best course of action.

(t) A revenue-sharing contract is a means of moving a two-company supply chain closer to the global optimum in the case that the supplier produces to stock.

(u) Under an echelon inventory management policy, each facility examines the inventory positions at all upstream facilities back to the raw materials suppliers, considers the total lead time back to raw materials, and orders accordingly.

(v) Joint optimization of reorder point and order quantity does not generate solutions with expected total costs significantly different from that for solutions based on deterministic optimization of order quantity and stochastic optimization of reorder point given the decision on order quantity.

(x) In a supply chain with stationary demands, the quantity of pipeline inventory is independent of the shipping frequency.

(y) A postponement strategy enables companies to lower the production and/or transportation costs.