单项选择题
x=4;y=6;z=2;items=x+y+z,cost=x*25+y*22+z*99,average_cost=cost/items,运行由这6个语句构成的MATLAB程序,会在命令窗口显示哪些变量的值?()
A.x,y,zB.items,costC.average_costD.items,cost,average_cost
A.朝鲜B.上海C.巴西D.华北平原
A.5B.4C.6D.7