Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: I didn't find out about this till today due to my bff telling me. I am so disgusted and offended by this.
This tweet contains emotions: 
anger, disgust, sadness