In the last paragraph, "play down their visibility" refers to ______.

A．Doctors will be held guilty if they risk their patients' death.
B．Modern medicine has assisted terminally iii patients in painless recovery.
C．The Court ruled that high-dosage pain-relieving medication can be prescribed.
D．A doctor's medication is no longer justified by his intentions.

A．manage their patients incompetently
B．give patients more medicine than needed
C．reduce drug dosages for their patients
D．prolong the needless suffering of the patients