Please help will mark brainliest!!!!

A university had 150 students registered for an introductory sociology class. The students were
randomly assigned to either a section taught with case studies or with lectures. Both sections
took the same final exam. Both margins of error are at a 90% confidence level. Which of the
following conclusions is the most reasonable regarding the sociology class?
The university should only offer the lecture teaching method, because
students in that section had a higher final exam average.
B
The university should not offer either teaching method, case studies or
lectures, because neither section achieved the target 90% average.
The university should only offer the lecture teaching method, because the
final exam average plus the margin of error achieved the target 90%.
The university does not have strong evidence to indicate which teaching
method is more effective.