For my kid? She picked on her own, and I see no reason to override her good judgement. I’d be much more likely to suggest that she manipulate her intended major, which is a trivial nothing part of the application for schools that don’t admit by major/ school, than that she pick recommenders based on that trivial nothing.
From my parent perspective, both of the teachers she picked are likely to speak to how she seeks out challenge, goes above and beyond expectations, works well with others, communicates complicated ideas well, and is at the top of the class. In history and English, she’s the kid who sits in the back, uses extra credit to keep her A and asks if she can be a group of one for all group projects. Relevance to major is not going to be helpful there. 
You have to consider the kid on the couch.
From my perspective as a former social science major, the hard sciences are surprisingly relevant, particularly for more-selective schools.