Given the emotion sadness and the tweet "@CTV_PowerPlay @lraitt Horrid disease! My maternal grandmother and each of her sisters suffered from this affliction. It's hard on all.", classify the intensity of the emotion displayed in the tweet. The classification options are: 0: no sadness can be inferred, 1: low amount of sadness can be inferred, 2: moderate amount of sadness can be inferred, 3: high amount of sadness can be inferred.
3: high amount of sadness can be inferred