<prompt> Kwa kuzingatia mkusanyiko wa rekodi za wateja, andika chaguo la kukokotoa ambalo linachuja wateja kutoka California.  <response>: def filter_customers_by_statedata, state: filtered_data x kwa x katika data ikiwa xstate state rudisha data_iliyochujwa Mfano filtered_ca_customers filter_customers_by_statedata, CA 