A company has some equipment that was purchased July 1, 2020, for $3,600. The company thinks that the equipment will be obsolete by June 30, 2022, and will have no value at that time. What is the required adjusting journal entry on December 31, 2020? 900 Dr. Amortization Expense, Computer Cr. Accumulated Amortization, Computer Dr. Accumulated Amortization, Computer Cr. Amortization Expense, Computer 900 900 009 1,800 Dr. Amortization Expense, Computer Cr. Accumulated Amortization, Computer Dr. Accumulated Amortization, Computer 1,800 450 900 Dr. Amortization Expense, Computer Cr. Accumulated Amortization, Computer O Dr. Accumulated Amortization, Computer Cr. Amortization Expense, Computer 900 900 009 1,800 Dr. Amortization Expense, Computer Cr. Accumulated Amortization, Computer Dr. Accumulated Amortization, Computer Cr. Amortization Expense, Computer 1,800 450 450