In the sentence from "Black Cat", what is the best definition of the word "odious"?

I did not, for some weeks, strike, or otherwise violently ill use it; but gradually very gradually I came to look upon it with unutterable loathing, and to flee silently from its odious presence, as from the breath of a pestilence.
A. In a grotesque manner
B. Sneaky, sly, untrustworthy
C. Causing or deserving disgust
D. A decreasing anger