Answer:
B. melodramatic and somber
Step-by-step explanation:
In these lines, the author describes a scene in which he is reflecting and almost falling asleep, when he hears a tapping by the door. The scene is quite mundane, yet it is described with exciting and emotional terms. Therefore, the tone is melodramatic. Moreover, the scene conveys a dark feeling, as it talks about midnight and forgotten lore. Therefore, the tone is also a somber one.