Take context from the input text and decide on the accurate relationship between 'enhance' and 'California' from the options provided.
Options: employer, distributed by, headquarters location, operator

Now that we have completed the closure of the Oxnard, California manufacturing facility and moved all product assembly to Tier 1 contract manufacturers, we will be able to leverage the efficiencies gained in working with these experienced manufacturers to enhance the margin profile for our telematics devices.
headquarters location