17. When heat is added to proteins, the hydrogen bonding in the secondary structure breaks apart. What are the algebraic signs of AH and AS for the denaturation process? (A) ΔΗ ＜ 0 and △S ＜ 0 (B) ΔΗ = 0 and △S ＞ 0 (C) ∆H ＞ 0 and △S ＞ 0 (D) ΔΗ ＜ 0 and △S ＞ 0 (E) ΔΗ ＞ 0 and △S ＜ 0