Which statement provides the best analysis of the passage's symbolism?

I believe that the correct answer to this question is: B: The nimbus represents Granny Weatherall changing perceptions.

Explanation:

"The Jilting of Granny Weatherall" is a short story that was written by Katherine Anne Porter, and which was published in 1930. This story narrates the last moments of Granny Weatherall and the memories she faces, and the facts she must come to acknowledge, as she faces the last stretches of her life. Among the many symbolisms used in the story, one that is very indicative is the one portrayed by this excerpt, when Granny remembers the days when she would use kerosene lamps, and how she perceived life from that soft, not so powerful light, whereas now, as she looks around and realizes the power of electricity, she sees things in a much different way. It seems almost as if electrical power was able to show her realities that she was unable to see before. One of them, is, that maybe the doctor, who, she had criticized so much before, was not as bad as she had first thought.