问题

In his effort to prevent his company from _____, he worked to his limit, thus _____.[ ]
A: breaking down; breaking down his health
B: closing down; broke down his health
C: closing down; his health broke down
D: breaking down; his health breaking down
B: closing down; broke down his health
C: closing down; his health broke down
D: breaking down; his health breaking down
正确答案是: