My English class was the hardest to understand, my math class had the most homework, and my history class had more notes.
A. NO CHANGE
B. My English class was harder to understand, my math class had the most homework, and my history class had more notes.
C. My English class was the hardest to understand, my math class had more homework, and my history class had more notes.
D. My English class was the hardest to understand, my math class had the most homework, and my history class had the most notes.

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