Refer to the following sentence in the fourth paragraph

giúp mình với ạa
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Refer to the following sentence in the fourth paragraph: "It was brilliant, perhaps even too brilliant".
Which explanation best describes why the sentence is effective?
The short sentence makes the reader read faster and the reader could possibly miss reading an important clue - that Richie
a.
knows how to commit the perfect murder. This adds to the tension of the story.
The short sentence shows the reader that the story will soon be over, which creates tension because we feel like we cannot
change anything.
The repetition of "brilliant" highlights how good Richie's plot was and the idea that it was "too brilliant" causes the reader to
wonder how Richie had come up with such a good plan. It makes it seem like he has committed the perfect crime before.
О с.
This adds to the tension of the story.
O d.
The repetition of the word 'brilliant' highlights how impressed Upfield was by Richie's plan. It shows how strong their
friendship was and that makes the reader wonder if they will remain friends, which adds tension to the story.