Question: Which of the following is the best way to control the international arms trade?
A: There is no effective mechanism for controlling the global defence trade, as illustrated by the failures of arms control measures in the 20th and 21st century.
B: Despite significant challenges, effective arms control of the complex defence trade can be achieved. For this to be possible will require cooperation and compromise between governments and other actors.
C: A complete ban on weapons and arms trade is the only comprehensive solution to the problems arising from the global arms trade.
D: Non-governmental rather than state or government agencies are best placed to develop the comprehensive and complex solutions needed to tackle challenges arising from the global defence trade.
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option. Write exactly 7 paragraphs each separated with two new lines answering this question. The last paragraph must start with "report".
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