In this videos, after 1:40:00 , the quality of videos is really bad. the audio gets missing again and again. therefore, i am unable to understand the DEFKIN question. please improve the quality of this video.
In this videos, after 1:40:00 , the quality of videos is really bad. the audio gets missing again and again. therefore, i am unable to understand the DEFKIN question. please improve the quality of this video.