<p>The issue is that public health is not BPCM. The only reason why #2 and #4 would even be considered to be BPCM is that they contain components (microbio and stats) that traditionally belong to BPCM categories (bio and math, respectively). It’s a tug of war b/w the course category (which is not BPCM) and the course title (which implies BPCM) and hence there is ambiguity.</p>