Final answer:
The total cost of vegetable oil is 1500 times the unit cost of a case, and the cost per bottle is the unit cost of a case divided by 12.
Step-by-step explanation:
The student asks about the total cost of 1500 cases of vegetable oil and the cost per bottle. With information provided that there are 12 - 1 liter bottles per case, the correct calculation method is as follows:
Option B:
Total cost: 1500 times the unit cost of a case. This is because you are buying 1500 cases, each at a certain unit cost, so you would multiply the number of cases by the cost of one case to find the total.
Cost per bottle: Unit cost of a case divided by 12. Since each case contains 12 bottles, dividing the cost of one case by 12 gives the cost of one bottle.