Not knowing how to grow crops，the primitive people had no ______ but to gather the fruit and hunt animals for food.

A．conception

B．command

C．virtue

D．alternative

某房地产投资项目的负债合计为3000万元，资产合计为5000万元，流动资产和流动负债分别为2500万元和1250万元，存贷为1500万元。试计算该房地产投资项目的资产负债率为( )。

A．167%
B．80%
C．200%
D．60%