Which sentence best explains dantes intended use of symbolism in this excerpt?

a. the fact that the heretics is souls are in tuned marks their belief that the soul does not exist.
b. the phrase "encased with like" indicates that the heretics are buried with those who share their beliefs.
c. the chests of stone indicate that the heretics our weighed down by their beliefs.
d. the comparison of the heat of the tombs suggests that god favors some heretics over others.