Read the passage below carefully:
Sokoto leather tanning, an ancient artisanal tradition in northwestern Nigeria, relies on organic processing agents derived from local flora. Unlike modern industrial tanneries that use trivalent chromium salts, traditional Sokoto tanners soak raw goat hides in aqueous infusions of crushed seeds from the bagaruwa tree (Vachellia nilotica) to achieve vegetable tanning. The dehairing phase uniquely employs a mixture of wood ash and hydrated lime, followed by deliming using fermented millet liquor. Recent chemical analyses reveal that bagaruwa pods contain a high concentration of hydrolysable tannins, which cross-link collagen fibres without generating toxic chemical effluents. However, while raw goat hides are processed locally, the final dyed morocco leather products are traditionally exported untreated to North Africa prior to final finishing.
Statement: According to the passage, Sokoto leather tanners perform deliming by applying an aqueous solution prepared from crushed bagaruwa tree seeds.
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