Which of the Following Statements Is True About the Sequential

Which of the following statements is true about the sequential method of allocating support department costs to production departments?

A) The sequential method is also known as the step-up method.
B) The sequential method captures some but not all the inter-support-department services by allocating support departments to other support departments and production departments in a series of steps.
C) The sequential method requires that the same cost driver be used for each support department.
D) The sequential method is less accurate than the direct method.