What is the three-step sequence in applying the unit analysis method of problem solving? 

(a) 1–unknown unit, 2–unit factor, 3–relevant given value 

(b) 1–unknown unit, 2–relevant given value, 3–unit factor 

(c) 1–relevant given value, 2–unknown unit, 3–unit factor 

(d) 1–unit factor, 2–unknown unit, 3–relevant given value 

(e) 1–unit factor, 2–relevant given value, 3–unknown unit.