问题详情

What"s the policeman"s biggest headache？ ______.
A．He has to justify his arrests while unable to provide sufficient evidence in most cases.
B．He has to provide the best possible public service at the least possible expense.
C．He has to get the most desirable results without breaking the law in any way.
D．He can hardly find enough time to learn criminal law while burdened with numerous criminal cases.