Jackie works in a pet store and is in charge of feeding the cats and dogs. Each dog eats 5 cups of pet food a day and each cat eats 3 cups of pet food a day. Altogether she prepares 110 cups of food a day for the 30 cats and dogs. Which systems of equations can be used to find the value of c, the number of cats that Jackie feeds, and d, the number of dogs Jackie feeds? * 10 points
A. c+d=110 and 5c+3d=30
B. c+d=30 and 5c+3d=110
C. c+d=110 and 3c+5d=30
D. c+d=30 and 3c+5d=110