She had been dead when she fell back on the bed and she stayed dead through all the effort to save her , while blood and tissue bubbled out of her and the suction clogged with particles spilling from her lungs . Everyone did what she knew how to do to save her . She could not be saved .
According to the above context, choose the best option to answer the following question.
Question: What may be the reason why they continued to work on saving her ?
Options:
A. None of the above choices .
B. Because that was all they could think to do .
C. Because her life was n't worth saving .
D. Because it 's their job .


A