Mining stocks were mostly lower, with heavyweights BHP Billiton (NYSE: BBL - news ) , Anglo American (LSE: AAL.L - news ) , Rio Tinto (LSE: RIO.L - news ) and Glencore (Xetra: A1JAGV - news ) all trading lower, as metal prices dipped across the board and copper suffered in particular.
Take context from the input text and decide on the accurate relationship between 'Glencore' and 'Mining' from the options provided.
Options: location of formation, industry, business division, owned by