Maybe I should make this a multiple choice quiz. Why did BMY withdraw the late-stage, head-to-head study between Peg-lambda and Peg-Alfa? A- They were unable to enroll patients. Nobody wants to use that shit. B- The cost of running the late-stage study couldn't be justified since BMY realises the market is going oral. C- BMY was worried Lambda would show inferior efficacy and/or safety in the head-to-head late-stage trial. D- All the above.