A construction company was paid a total of $500000 for a construction project. The company's only costs for the project were for labor and materials. Was the company's profit for the project greater than $150000?

1 The company's total cost was three times its cost for materials.

2 The company's profit was greater than its cost for labor.

给的标准答案是C, 可是我做不出来， 我觉得是E.请教大家该怎么做

假设，profit=b,material cost=a

根据条件1，labor cost=2a

根据条件2，b>2a

而且,b+a+2a=500000,也即，5a>500000,a>100000,

b>2a>200000,故得出,profit is greater than 150000