The music awards ceremony of the new year broke the selection method of only one best golden song in the past, and selected the best golden songs according to several music styles such as rock and jazz. This can make the work of musicians more fair. Treating can also make listeners and music lovers have more say on the pros and cons of music. Based on the above information, which of the following are assumptions implicit in this change in selection? ['Dividing music styles can promote the blooming of flowers in the music industry.', 'Each song can be classified according to the division method, without omission.', 'Listeners and music lovers have their favorite song styles.', 'Changes in the selection method provide more opportunities for musicians to show themselves and realize their self-worth.']