For your club’s fundraiser, you decided to hold a bake sale. In order to make bakery items, you had to purchase 12 pounds of sugar and 15 pounds of flour. Your total cost was $9.30. On a second trip to the grocery store, you purchased 4 pounds of sugar and 10 pounds of flour for a total cost of $4.60. Which of the following represent the system of equations for this problem?
Group of answer choices

A. 12s+15f=9.30
10s+4f=4.60


B. 12s+15f=9.30
4s+10f=4.60


C. 12s+15f=4.60
4s+10f=9.30

D. 12s+4s=9.30
15f+10f=4.60