A child is given a teaspoon of medication for every 20 pounds he weighs. What happens to the number of teaspoons of medication given when the weight of the child changes?
a) When the number of pounds increases, the number of teaspoons of medication given increases.
b) When the number of pounds decreases, the number of teaspoons of medication given stays the same.
c) When the number of pounds increases, the number of teaspoons of medication given decreases.
d) When the number of pounds decreases, the number of teaspoons of medication given increases.