Assuming your three options are the extent of the options, I think you can eliminate option iii.
There is an explanation for why we have not heard TLD yet even though we are greater than six months past data lock...likely ASCO, less likely publication. I suspect we will hear which one to expect at the ASM. There is no reasonable explanation for the company not having received data output by now...none whatsoever. They know the results....period. I do not think it is a realistic argument to say they did not have data in hand by the February ASCO submission deadline (March for LBAs).
If one does not believe that a pharma company needs to release negative information in a timely fashion (i.e., 4 day rule), then one surely believes that a company only has the flexibility to wait for the appropriate platform to frame the release of mixed or negative data that may be somewhere between a dark cloud with a silver lining to a silver lining with a touch of grey to flat out positive result. That platform is ASCO. I believe that clearly negative data DOES need to follow the 4day rule and know that general counsel for at least 2 large companies agree with this assessment. It would be nearly impossible to argue that withholding a mixed or negative result can extend beyond ASCO. They had the data in time to submit and there is no better platform available in the near future.
Therefore, I think it is safe to assume that if we do not see data at ASCO, then that data is predominantly positive.