What do these lines from Sir Gawain and the Green Knight reveal about the character of Sir Gawain?

That no host under heaven is hardier of will,
Nor better brothers-in-arms where battle is joined;
I am the weakest, well I know, and of wit feeblest;

A.
He is proud.
B.
He is modest.
C.
He has little patience.
D.
He is arrogant.
E.
He is weak.