Read the text and determine if the sentence is true (see options at the end):

Scars of Love is a 1918 Australian silent film. It is a lost film about which little is known except it is a melodrama featuring a Red Cross nurse and an Anzac soldier which climaxes in the European battlefields of World War I in which both leads die. It deals with the sins of the father visiting the children.

Sentence: World War I was a popular topic for movies.
Possible answers:
a). Yes;
b). It's impossible to say;
c). No;
b).