Best Ltd purchased a building on a prime central business district site for $2 000 000. The value of the land is considered to be $1 000 000. The useful life of the building is expected to be 25 years after Best Ltd spends a further $500 000 on improvements. The residual value of the building at that time is estimated to be $250 000. The benefits from owning the land and building are expected to be derived evenly. What is the appropriate annual depreciation charge? (Use the straight-line method of depreciation.)

		$90 000
		$70 000
		$50 000
		$30 000