The current Secretary-General of the United Nations is António Guterres, who is from Portugal. However, as per the question options, none of them are correct.
The position of the UN Secretary-General is very important in terms of global diplomacy, and the person holding this role is chosen based on a variety of criteria, including diplomatic expertise, experience in international affairs, and personal integrity.
The previous Secretary-General was Ban Ki-moon, from South Korea. He served as the 8th Secretary-General of the United Nations from 2007 to 2016.
The Secretary-General plays a key role in international peace and security, and serves as the chief administrative officer of the UN, making sure that UN decisions are implemented.
\( \textbf{Correct Answer:} \text{António Guterres from Portugal.} \)