Project team members are drawn from all available sources, both internal and external. When the project management team is able to influence or direct staff assignments, characteristics to consider include all of the following EXCEPT ______ .

A．availability

B．political philosophy

C．ability

D．experience

以下程序运行后的输出结果是【 】　　int a=5;　　fun(int b)　　{ static int a=10;　　　a+=b++;　　　printf("%d ",a);　　}　　main(　)　　{ int c=20;　　　fun(c);　　　a+=c++;　　　printf("%d\n",a);　　}