<p>^ sorry if I wasn’t clear. Studying issues. You stated that pre-calc is easy (and it certainly is), so why the B-C? You are an engineering major so things are going to get difficult very soon. Are you ready for this? It’s going to take more effort than what you seem to have put toward the pre-calc. You have a goal and I don’t think you’ve done any permanent damage to it, yet. You may just need to kick it up a notch. 
Best of luck.</p>