What may be the most interesting conclusion from the paper? Question 17 options: a) Lance Armstrong's chemotherapy made him a superhuman statistical outlier. b) Racers using EPO, viewed as a group, did not outperform historical racers. c) There were no race outliers (people who outpedalled the rest) because EPO use was so rampant that everyone was statistically an outlier. d) Lance Armstrong was fast; he doped; so he won because he doped (post hoc ergo proper hoc)