Take context from the input text and decide on the accurate relationship between 'Glencore' and 'mining' from the options provided.
Options: owned by, industry, stock exchange, parent organization

Glencore (GLEN.L) slumped more than 15 percent to a new all-time low after a bearish note from broker Investec that raised doubts over the mining and commodities company's valuation and high debt levels.
industry