Elena’s bread recipe calls for 3 ounces of butter for each 4 cups of flour used. She needs to make 6 times the original recipe. If 12 ounces of butter is used, then how many cups of flour are needed?	Pick one:
A) 1
B) 4
C) 9
D) 13
E) 24

Rationale: "solving through algebra route : 3 b + 4 f = x amount if we multiply this equation with 6 we get : 18 b + 24 f = 6 x therefore , we got 18 ounces of butter and 6 x amount of quantity when we use 24 ounces of floor . ans : e"
Answer: E