Deferred from Brown and taking SAT IIs

I was deferred from Brown in the ED round and basically the letter said that they needed a another cycle of grades(3As 2Bs damn it) and any available new test scores. I am signing up to take SAT IIs in Writing and Literature but I need a third. I am a prospective comparative lit major with mediocre math skills. I am looking for suggestions on a third test. I have narrowed it down to the following World History, Math IIC(taking AP Cal AB-A), or Chemistry (taking AP Chem-B). If I take IIC then I will have a tutor. Any suggestions or opinions?
Just in case you cared I was signing up for SAT IIs for Vanderbilt placement.