Arrange the following UN Secretary Generals in order of their tenure.
(A) Javier Perez de Cuellar
(B) Ban Ki- Moon
(C) U Thant
(D) Kofi A Annan
(E) Boutros Boutros Ghali

Choose the correct answer from the options given below :
(1) (C), (A), (D), (E), (B)
(2) (C), (A), (E), (D), (B)
(3) (C), (E), (A), (D), (B)
(4) (E), (C), (A), (B), (D)

2

The UN Secretaries-General in the correct chronological order by their tenure are:

(C) U Thant - Served from 1961 to 1971.
(A) Javier Perez de Cuellar - Served from 1982 to 1991.
(E) Boutros Boutros-Ghali - Served from 1992 to 1996.
(D) Kofi A. Annan - Served from 1997 to 2006.
(B) Ban Ki-moon - Served from 2007 to 2016.

Based on this order, the correct sequence is: (C), (A), (E), (D), (B)

Mr Guterres' predecessors as Secretary-General were: Ban Ki-moon (Korea) who served from January 2007 to December 2016; Kofi Annan (Ghana) who held office from January 1997 to December 2006; Boutros Boutros-Ghali (Egypt), who held office from January 1992 to December 1996; Javier Pèrez de Cuèllar (Peru), who served from January 1982 to December 1991; Kurt Waldheim (Austria), who held office from January 1972 to December 1981; U Thant (Burma, now Myanmar), who served from November 1961, when he was appointed acting Secretary-General (he was formally appointed Secretary-General in November 1962) to December 1971; Dag Hammarskjöld (Sweden), who served from April 1953 until his death in a plane crash in Africa in September 1961; and Trygve Lie (Norway), who held office from February 1946 to his resignation in November 1952