Consider the supply chain illustrated below:
manufacturer-distributor-wholesaler-retailer
Last year the retailer's weekly variance of demand was 190 units. The variance of orders was 490, 590, 730, and 1,300 units, for the retailer, wholesaler, distributor, and manufacturer, respectively.
A) The bullwhip measure for the retailer is
B) The bullwhip measure for the wholesaler is
C) The bullwhip measure for the distributor is
D) The bullwhip measure for the manufacturer is