Khawlah Oil Company, uses successful cost approach, owned the following unproved property: Lease Acres Bonus/acre Allowance for Type impairment A 10,000 $50 $100,000 Significant B 8.000 $75 $150,000 Significant C-F 50,000 $20 $480,000 Individually Insignificant At December 31, 2020, based on past experience, company has abandoned 70% of all individually insignificant lease. How much total lease impairment expenses should company record? A. $220,000 B. $700,000 C. $336,000 D. $480,000