In which of these lines does Sir Gawain display honesty and modesty by publicly acknowledging his failings in Arthur's court?

C) "Behold, sir," said he, and handles the belt, "This is the blazon of the blemish that I bear on my neck; This is the sign of sore loss that I have suffered there; For the cowardice and coveting that I came to there; This is the badge of false faith that I was found in there, ...