Based on the tweet "Me at Start of Semester Expecting = A+\nAfter Mids = B+\nAfter Finals = Passing Marks\n\nThinking to quit MS. 😡", categorize the level of anger felt by the author. Select from the following: 0: no anger can be inferred, 1: low amount of anger can be inferred, 2: moderate amount of anger can be inferred, 3: high amount of anger can be inferred.