Please explain how B was wrong too

Problem S11.6 Question Help 0 Consider the supply chain illustrated below: Manufacturer - Distributor Wholesaler HD Retailer @ Last year the retailer's weekly variance demand was 220 units. The variance of orders was 490, 610,770, and 1,320 units, for the retailer, wholesaler, distributor, and manufacturer, respectively. (Note that the variance of orders equals the variance of demand for that firm's supplier.) a) The bullwhip measure for the retailer is 2.22. (Enior your response rounded to two decimal places.) b) The bullwhip measure for the wholesaler is 1.24. (Enter your response rounded to two decimal places.) c) The bullwhip measure for the distributor is 3.5. (Enter your response rounded to two decimal places.) Enter your answer in the answer box and then click Check Answer. ? parts Clear All remaining Check