The plot of ‘Giver’ is Jonas a 12 year old boy who thought he loved in a utopian society where everything was perfect. As the novel goes further and further into the story we come to realize he lives in a dystopian society where (SPOILERS) everyone looses their memories.
With that statement made by the narrator. The only possible answer would be B.
Considering the fact that the small line from the text implies that they are not telling the truth. If you look at the words, “ Truth in pleasant disguise. “ That’d be a lie. Hope that helped.