PLEASE HELP!
The author describes the atmosphere in the tinnel leading to Smaug's lair this way:

Also it was undoubtedly hot in the tunnel. Wisps of vapor floated up and past him [Bilbo] and he began to sweat. A sound, too, Began to throb in his ears, a sort of bubbling like the noise of a large pot galloping on the fire, mixed with a rumble as of a gigantic tom-cat purring.

Which word does not describe the mood this passage creates?

A. Uncomfortable

B. Tense

C. Suspenseful

D. Pleasant