Pengaruh Pemberian Vitamin C, Asam Lipoat, dan Pentoksifilin terhadap Spermatozoa Pasca Kriopreservasi: Kajian terhadap Kualitas, Kadar ROS, Indeks Fragmentasi DNA, dan Apoptosis = Effect of Vitamin C, Alpha Lipoic Acid and Pentoxifylline on Sperm Condition Post Cryopreservation: Analysis on Quality, ROS Level, DNA Fragmentation Index, and Apoptosis