People were unprepared for the sinking of the
Titanic simply because of believing that the ship
was unsinkable.
(A) of believing that the ship was unsinkable
(B) of having a belief in the ship as unsinkable
(C) they believed that the ship was unsinkable
(D) they believed the unsinkable nature of
the ship
(E) of a belief on their part of an
unsinkable ship