Acids can be converted to primary amines by ________.

A) conversion to the nitrile followed by treatment with LiAlH₄
B) conversion to the diazonium salt followed by treatment with NaBH₄
C) conversion to the primary amide followed by treatment with LiAlH₄
D) both A and B
E) both A and C

According to the equation: As₂S_3(s) ⇌ 2As³⁺_(aq) + 3S^2-_(aq), how many arsenic ions go into solution for each mole of orpiment that dissolves?