For most measurements over 2′ or 3′ long, carpenters prefer to work with feet and inches. find the total of the following measurements: 7′-4″, 3′-6″, 10′-10″, 12′-5″, 9′-10″, and then subtract 69.

(A) It allows for more precise measurements.
(B) It's easier to convert to metric units.
(C) It's a tradition in the carpentry profession.
(D) It's a legal requirement in most countries.