Critical Reasoning

78.A recent report determined that although only 3
percent of drivers on Maryland highways equipped
their vehicles with radar detectors, 33 percent of all
vehicles ticketed for exceeding the speed limit were
equipped with them. Clearly, drivers who equip their
vehicles with radar detectors are more likely to exceed
the speed limit regularly than are drivers who do not.
The conclusion drawn above depends on which of the
following assumptions?
(A) Drivers who equip their vehicles with radar
detectors are less likely to be ticketed for
exceeding the speed limit than are drivers who
do not.
(B) Drivers who are ticketed for exceeding the
speed limit are more likely to exceed the speed
limit regularly than are drivers who are not
ticketed.
(C) The number of vehicles that were ticketed for
exceeding the speed limit was greater than the
number of vehicles that were equipped with
radar detectors.
(D) Many of the vehicles that were ticketed for
exceeding the speed limit were ticketed more
than once in the time period covered by the
report.
(E) Drivers on Maryland highways exceeded the
speed limit more often than did drivers on other
state highways not covered in the report.

What is the correct approach to solve this question?
Here is how I tried to solved it --
Step 1) Identified that it is assumption question
Step 2) deconstruct the argument into Conclusion, premise and try to find assumption
Step 3) predict the answer and then match it with answer choices

Conclusion:
"drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not"

Premise:
3 out of every 100 drivers have radar. 33 out of every 100 ticketed vehicles have radar.

Thanks