A scale 6 ft. 8 inches long is divided into 4 equal parts. Find the length of each part  Select the correct option.
A) 17 inches B) 20 inches C) 15 inches D) 18 inches E) 19 inches

Rationale: "explanation : total length of scale in inches = ( 6 * 12 ) + 8 = 80 inches length of each of the 4 parts = 80 / 4 = 20 inches answer : b"
Answer: B