The two-way table of column relative frequencies below shows data on how often a teenager's parents monitor their screen time and whether or not the teenager has a time limit for their daily screen time for teenagers in West Lake County.
Frequency of monitored screen time vs. time limit for screen time

Based on the data, which of the following statements must be true for teenagers in West Lake County?
Choose 1
a. The parents of a teenager with a time limit are more likely to never monitor their screen time than the parents of a teenager with no time limit
b. A teenager whose parents occasionally monitor their screen time is more likely to have a time limit.
c. A teenager whose parents always monitor their screen time is more likely to have a time limit.
d. The parents of a teenager with a time limit are more likely to usually monitor the screen time than to always monitor it.