Answer: I believe its the one that says "each dog is fed between 1 and 3 pounds of dog food each week"
Explanation:
To give each dog an equal amount you'd have to divide 20 by 7.
20 / 7
when you do that is doesn't come out to a whole number
20 / 7 = 2.8571428571
anything higher than 2.8 pounds would go over his limit of 20 pounds
so true statement I think would be the one that says between 1 and 3.