Take context from the input text and decide on the accurate relationship between 'Comcast' and 'Sky' from the options provided.
Options: publisher, subsidiary, original broadcaster, headquarters location

We're also reducing operating expenses while still maintaining good momentum in our key initiative, which is Sky Q, which is now in close to 50% of customers' homes or over 10 percentage points higher year-on-year, and the successful launch of Sky broadband in Italy, utilizing Comcast xFi technology.
subsidiary