a) give up and weep at a press conference, admit you are/were a cheat
b) continue to deny overwhelming, clearly true allegations and look like a total dbag and a complete a-hole. plus your face is annoying, which doesn't help
c) kill yourself
d) go into hiding
e) "no comment", put on your speedo, and toe the line at another triathlon. in other words, f with people while simultaneously grossing them out by showing off your package
f) write another book, cash in
g) other