Given the emotion anger and the tweet "Why are girls so bad at letting shit go? That's prolly why they're moody. They're all built up with grudges and anger and regret. 😂", classify the intensity of the emotion displayed in the tweet. The classification options are: 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.