Answer:
Debit : Building $10,000
Credit : Cash $10,000
Step-by-step explanation:
The major upgrade is treated as if we purchased another Building separately, with own useful life.
So, the upgrade will increase the Assets of the Buildings (Debit) and decrease the Assets of Cash to depict outflow of economic benefits.
Now, Depreciation for the year will then be considered separately for the Building in existence and the upgrade as they have different useful life.