I personally believe that the government should get involved with working conditions (choice B), to an extent. The reason I say "to an extent" is because if the government decides to get involved too much or take too much grip on these factories, it could be detrimental to said factorie's profits. What I mean is the government may add too many regulations, like raising the minimum wage for the workers or add taxes that make it next to impossible to profit off of the thing being produced. What that would mean is that the 2 dollar cheeseburger you get from McDonald's would turn into an 8 dollar cheeseburger that's been cut in half because the employers have to raise their prices because they have to deal with more regulations, taxes, or rises to the minimum wage for their workers.
Hope this helps, if not, comment below please!!!