【单选题】More than one in ten people who are regularly exposed to organophosphate pesticides(有机磷酸脂农药) will suffer unrecoverable physical and mental damage, a team of psychiatrists warns. The investigators say ...
A.
Whether exposure to organophosphate will do any harm to man
B.
Whether chronic exposure to organophosphate would lead to widespread illness
C.
Whether it is worthwhile to find out the number of people suffering from organophosphate poisoning