GRE General Test: TC-712693 GRE Text Completion

Kazan was quickly (i)_____by many of his contemporaries for his transgression, who saw his testimony as treachery, an act of (ii)_____ which stained how they viewed him both as an artist and as a man. It was only by continually making films that he was able to (iii)_____ his perceived sins and achieve some measure of atonement.
Blank (i)
Blank (ii)
Blank (iii)