How do the know the rights are included? If you buy that option today you are already past the record date for the rights. Then if you consider you won't get the stock until you exercise the option, how are you entitled to rights? I'm not saying you're wrong, I just don't get it.
If you acquired the options prior to the rights offering effective date the option contract includes the same right as owning the shares(prior). There are now 2 options contracts trading, one with rights and one without. You can buy the stock any longer and get the rights but you can buy the option and get them. I bought the pre-rights option before the Rights offering so the seller is now effectively shorter than he bargained for. This effectively made me longer because we are now in the money.