男，41岁，左腰轻度胀痛3个月，无肉眼血尿。B超提示左肾下级有一10cm×9cm×7cm大小的肿物，回声不均。

胸片、消化系B超检查未见异常，碱性磷酸酶未见升高，本患者的临床分期是（）

A.T₀N₀M₀

B.T₁N₀M₀

C.T₂N₀M₀

D.T₃N₁M₀

E.T₄N₀M₁

Costs included in the determination of a company’s economic profit that are also most likely to be included in that company’s accounting costs are:（）

A. explicit costs.

B. economic depreciation and foregone interest.

C. opportunity costs associated with labor provided by the company’s owners.