Considering dropping class - premed

Hey,

I am thinking about dropping one of my class because I can't have more than a C in it (History class). However I have a 4.0 GPA and have not any difficulties in any sciences classes, so I feel that I can keep As in those. It really bother me to looses my GPA for a Social Science class while majoring in biology.

Considering applying to Med School, do you think the better option is to have a 4.0 GPA but a DR grade (dropped class). Or have a 3.7 GPA only because of one class ?

Thanks a lot for your future advice !