In order to maintain a healthy weight, an average adult dog that weighs 21 kilograms must consume 11 grams of dog food per
kilogram of its body weight each day. A specialty pet store sells dog food by the cup, where 4 cups of dog food weighs 356 grams.
About how many cups of dog food should the dog consume each day in order to maintain a healthy weight?
A. 2.60
B. 0.39
C. 2.75
D. 0.65