Bottleneck buys: a. represent a large dollar volume b. are difficult to manage because there are few options c. are a good place to focus on cost reduction d. all of the above e. only a and c

B - Are difficult to manage because there are few options

Explanation: Bottlenecks buy is the purchase of products that have limited manufacturers as well as distributors. This process is a difficult one as its always very difficult to decide on immediate action because of the unreliability of the manufactures/distributors of the products.