17.5x12=210
210 divided by 14=15
15x2.50=37.5
37.5
17.5 is feet so you need to divide by 12 for inches which gets 210 and you need each necklace to be 14 inches so you need to divide 210 by 14 which is 15 each necklace costs 2.50 so you multiply 2.50x15
You get 37.5
It’s b because I just did that question
D I guess because if you multiply all of that together, you get 0.0625 which is 1/16 and then you simplify it to be 1/4