某公司采用销售百分比法对资金需要量进行预测。预计2008年的销售收入为5700万元，预计销售成本、销售费用、管理费用、财务费用占销售收入的百分比分别为75%、0.5%、19.5%、1.2%。假定该公司适用的所得税率为30%，股利支付率为40%。则该公司2008年留存收益的增加额应为（）万元。

A.90.972

B.38.988

C.129.96

D.60.648

The  (1) is a general description of the architecture of a workflow management system used by the WFMC, in which the main components and the associated interfaces are summarized. The workflow enactment service is the heart of a workflow system which consists of several (2).

空白（1）处填（）

A.waterfallmodel

B.workflowreferencemodel

C.evolutionarymodel

D.spiralmodel