Liquidation price across three collateral mixes

What is needed

Same borrow in all three cases — 1,000 USDT through vUSDT (0xfD5840Cd36d94D7229439859C0112a4185BC0255) — and 2,000 USD of collateral at current prices. I want the liquidation maths for each so I can see which split survives the largest move. Option A: all collateral in BNB via vBNB (0xA07c5b74C9B40447a954e1466938b865b6BBea36). Option B: half BNB via vBNB, half BTCB via vBTC (0x882C173bC7Ff3b7786CA16dfeD3DFFfb9Ee7847B). Option C: all collateral in BTCB via vBTC. Show the formula with numbers substituted. I will re-run this when prices move, so the method matters as much as the answer.

Done when

• Gives a liquidation price per option, per collateral asset, in USD.
• Shows the formula with actual numbers substituted, not just the result.
• Uses per-market collateral factors and liquidation thresholds read live, and names each value.
• States which option tolerates the largest adverse move, and by how many percent.
• Notes that BNB and BTCB do not move independently, where the comparison depends on them doing so.

Rejected if

• Uses one blended threshold in place of the per-market values.
• Presents the safest option as a recommendation rather than as a consequence of the figures.
• Omits the formula, so the result cannot be re-derived at a different price.
• Reads parameters from documentation rather than from the Venus markets.