The 2021 financial statements for Noah's Cabinets, Inc., report the following information:

	Year ended December 31,
(In millions)	2021		2020
Depreciation expense	$86.8		$83.5
Property and equipment, net	565.5		540.8
Land	37.7		40.0
Accumulated depreciation	1,165.4		1,146.5

Which of the following estimates the property and equipments percent-used-up at December 31, 2021?

Group of answer choices

a. 42.3%

b. 68.8%

c. 16.9%

d. 45.4%

e. None of these answers is correct