please help asap

You're an Australian stock analyst employed at a brokerage. It's 9 a.m. and you're about to send an email update to your clients before the Australian equity market opens at 10 a.m. Overnight, the big news was that the gold price fell by 6%, while the S\&P500 index and ASX200 index futures were unchanged. You believe that an Australian gold mining firm's market value of assets would also have fallen by the same proportion as the gold price. You're trying to calculate how much the levered mining firm's share price should fall when the Australian equity market opens later this morning. The mining firm's debt-to-assets ratio is 23, assets-to-equity ratio is 3, and debt-to-equity ratio is 2, all based on market values. How much do you expect the mining firm's share price to fall when the Australian equity market opens this morning? It's expected to fall by around: Select one: a. 0.6667% b. 4% C. 6% d. 12% e. 18%