We learned that Pull-based supply chains are production and distribution demand driven and are therefore coordinated with the true customer demand, rather than forecasted demand. But Pull-based supply chains can be difficult to implement

Select one:

a. when the bullwhip effect is present.

b. when the lead times to customers are very long.

c. when reacting to demand information is easy to do.

d. when accurate forecasts are available.

e. It is always easy to implement Pull-based supply chains.