a) Prepare the journal entry on April 30, 20x12.

b) Prepare the journal entry to record depreciation expense at December 31, 20x12.

On January 2, 20x0, the ABDF purchased a building for $6,000,000. The cost of the building was allocated as follows: Residual Cost Value Useful Life External Structure $4,000,000 $400,000 40 All other components 2,000,000 O 15 On April 30, 20x12, the HVAC system is replaced at a cost of $600,000. The cost of the original HVAC system was $800,000 and was included in 'All Other Components'. On April 30, 20x28, ABDF invested $1,000,000 in improvements to the building (allocated to the external structure). This improvement increased the total useful life of the external structure to 60 years. The residual value remains the same. ABDF uses the straight-line method of depreciation