The graph shows how many cups of food are in an automatic pet feeder after given numbers of days. Which statement is correct?


A.

Every3/4-day, the amount of food decreases by 1 cup.


B.

Every day, the amount of food decreases by 4/3 cups.


C.

Every 3 days, the amount of food decreases by 4 cups.


D.

Every 4 days, the amount of food decreases by 3 cups.