A company has a computer that was purchased July 1, 2020, for $1,200. The company thinks that the computer 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? 300 300 Dr. Amortization Expense, Computer Cr. Accumulated Amortization, Computer 0 Dr. Accumulated Amortization, Computer Cr. Amortization Expense, Computer 300 300 600 600 Dr. Amortization Expense. Computer Cr. Accumulated Amortization, Computer Dr. Accumulated Amortization, Computer Cr. Amortization Expense. Computer 1.200 1.200 Activate w