A backpacker is packing survival rations that consist of granola bars and packets of peanut butter. A granola bar has 470 food calories, and a packet of peanut butter has 90 food calories. The backpacker makes the survival rations using a total of 10 granola bars and packets of peanut butter combined, and the granola bars and packets of peanut butter have a total of 1,660 food calories. Which of the following systems of equations can be used to determine the number of granola bars, g, and packets of peanut butter, p, that are in the survival rations? A) 280(g + p) = 1,660
g – p = 10
B) 90g + 470p = 1,660
g – p = 10
C) 90g + 470p = 1,660
g = 10 – p
D) 470g + 90p = 1,660
g = 10 – p