At this point in the book (Farewell to Manzanar) the tone of this very moving story

a. is positively affected by the fact that it is being told from the perspective of an innocent little girl.
b. is dark and pessimistic due to the nature of the situation.
c. is optimistic because the story is based on a fictional situation of the author's invention.
d. is negatively affected by the general lack of outward affection displayed between the members of the family.