It is A......................
Answer:
7 is the answer you're looking for
It would take 4 cups of milk, how I got my answer.
I first needed to know out how much milk was in 1 serving so I divided, 2.5÷5=0.5, so then I multiplied, 0.5×3=1.5, the reason I done this was because there are 3 more servings than the last, then I added, 2.5+1.5=4.
I hope this helps!