Which statement about string is best supported by evidence in the play?

a. the message of string is that money turns people against each other who would otherwise be brethren.

b. the symbolism in string is centered on the character katy, whose innocence is a major contrast to joe's guilty conscience.

c. the characters in string all have major secrets that they strive to avoid revealing throughout the play.

d. the setting of string shows what happens to people when basic needs, such as shelter, cannot be attained.