Refer to the input text as context and select the correct relationship between 'concentration' and 'nine' from the available options.
Options: legal form, position held, original broadcaster, business division

To summarize, through this agreement, we created a Master Lease structure which reduces our risk in the event of restructuring, extended our average lease term by nine years and we've given ourselves the option to reduce our concentration to AMC, by transitioning seven theaters.
original broadcaster