A salad dressing recipe uses 12 parts oil, 3 parts vinegar, and 2 parts honey. Which of the following sets of ingredients are in a proportional relationship with the recipe? Select all that apply.
9 Tbsp oil, 2 Tbsp vinegar, 1.5 Tbsp honey
6 Tbsp oil, 1.5 Tbsp vinegar, 1 Tbsp honey
15 Tbsp oil, 4 Tbsp vinegar, 3 Tbsp honey
18 Tbsp oil, 4.5 Tbsp vinegar, 3 Tbsp honey
24 Tbsp oil, 6 Tbsp vinegar, 4 Tbsp honey
Please give an explanation on how you got your answer.