Context: Block three went surprisingly quickly considering how intense it was for me . The most important realization I had this block was : Me + Calculus + Block System = BAD IDEA ! It 's not that the class was terrible , or too hard , or that I did n't understand the material .

Question: What classes may I struggle with ?
Options:
0. Statistics
1. Physics
2. Science
3. None of the above choices .
Answer: 3