关于欧洲西部的说法，不正确的是（　　）

A．是国际旅游业发达的地区之一

B．目前经济发展水平仍居各大洲之首

C．欧洲位于北温带，紧邻亚洲，气候的大陆性强

D．北部和西部濒临大洋，海岸线曲折，岛屿、半岛多

Enamel Manufacturing (EM) is considering investing in a new vehicle. EM finances new projects using retained earnings and bank loans. This new vehicle is expected to have the same level of risk as the typical investment made by EM. Which one of the following should the firm use in making its decision（）

A. After-tax cost of debt.

B. Marginal cost of capital.

C. Cost of preferred stock.