The passage tells us that Mr. Britton ______.
A.regains a sense of self-worth from the Rolling Thunder riding
B.joined the Rolling Thunder rally annually because he was assigned by the Christian Motorcyclists Association as the chaplain for the bikers
C.is a member of Rolling Thunder, the Christian Motorcyclists Association, Carry the Flame and Rolling Thunder National
D.couldn’t hold a steady job when he retumed from Vietnam because of severe physical injury during the war