已知某银行2013年利润总额为2300亿元，净利润为1200亿元；年初资产总额为5000亿元，所有者权益余额为3000亿元；年末资产总额为7000亿元，年末所有者权益余额为3500亿元。根据以上材料，回答下列问题：

银行管理层若想提高银行的资产利润率，可以采取的途径有（）。

A.提高生息资产的比重

B.降低非生息资产的比重

C.提高贷款的发放量

D.控制成本和费用

A real estate developer has bought 1,872 acres of land on which to build a new neighborhood. He plans to zone the area for roads, common area, and housing plots on a ratio of 2:3:8, respectively. If a planned lake will take up 16 acres of the common area, how many acres of the common area will be left over for the clubhouse and golf course ？（）

A. 128

B. 144

C. 416

D. 432

E. 450