In the writer's opinion, ______.

A．managers need a degree and the ability to communicate
B．training needs to be done in groups to be successful
C．managers today must have good communication and leadership skills
D．industrial managers do not need to write letters

A．Mastectomy is the only reasonable choice for a woman with small breast and a large tumor.
B．Life-style and attitudes also play a role in the choice.
C．Many women make an improper decision in the treatment out of fear and lack of information.
D．Women are more likely to feel tired if they accept mastectomy.