Earth Oil owned the following unproved property at 12/31/91:

• Significant Leases:
   Lease A: $350,000, Impairment: $130,000
   Lease B: $500,000, Impairment: $160,000
• Insignificant Leases:
   Lease C: $50,000
   Lease D: $30,000
   Lease E: $28,000
   Lease F: $18,000
   Total Cost: $126,000, Total Impairment: $45,000

Requirement:
 Prepare journal entries for 2092, assuming the following events:
 a. Proved reserves were found on Lease A and Lease B.
 b. Lease D was sold for $35,000.
 c. Lease E was impaired by an additional $7,000.