Rearrange the following six sentence (A),(B),(C),(D),(E) and (F) in the proper sequence to form a meaningful paragraph then answer the question given below them.

(A)On touring the whole world and finding no couple who was perfectly happy, the young couple understood that it is very difficult to find perfect happiness anywhere in the world.
(B)There was a young couple who led a very happy life together.
(C)One day, they heard that a wise old man had come to town; he could solve all kinds of problems and guide people.
(D)The wise old man told them; "Travel around the world and seek a man and a woman who are perfectly happy as a couple".
(E)So the couple decided to visit the wise old man and tell him their worry.
(F)The only things that they worried about was, whether their happiness would last forever or would they too have to face problems.