Ciegokathgo Ciegokathgo Math Answered А. common multiples of 15 and 302 30,40,50,60 B. 30,40,60,120 c. 30,45,60,75 D. 30,45.65,122 14. What is the greatest common factor (GCF) of 12 and 18. A. 3 B. 6 c.9 D. 12