B is prob not correct cause they doubled their marketing spend and their market share still went down, so the sales were prob cause of industry expanding itself, so keeping the same stuff wouldn't be useful
I think B because D is more of just a statement rather than an explicit advantage, like it has advantages that come from it like lower marketing but not an advantage itself, but I see why it could be D too
incentives are positive reasons employes have to do anything so basically like motivation
retention is remaining with the business so basically its saying the business has low turnover if ur retention rate is high