Why did Mr. Layton call it a "win-win" situation（）

A．The situation proved to be beneficial to both Mr. Edwin and the employer.
B．The situation proved to be beneficial to Mr. Edwin, who with his talent and passion, would have better chances for career development.
C．The situation proved to be beneficial to the employer who would sponsor a second employer.
D．The situation proved to be beneficial to both the manufacturing company and speech coaches.