In the context of the input sentence, determine the relationship between 'Katanga Mining' and 'Glencore'.
Options: business division, parent organization, stock exchange, chief executive officer

Glencore (GLEN.L) held talks with Congolese officials in Kinshasa on Thursday over the company's plans to suspend some copper output at its Katanga Mining unit for 18 months, an adviser to the prime minister said.
parent organization