Which of the Following Reactions Is Incorrectly Classified?
A) Mg $\rightarrow$

Which of the following reactions is incorrectly classified?

A) Mg (s) + 2 HCl (aq) $\rightarrow$ MgCl₂ (aq) + H₂ (aq) single-replacement
B) Pb(NO₃) ₂ (aq) + 2 LiCl (aq) $\rightarrow$ 2 LiNO₃ (aq) + PbCl₂ (s) double-replacement
C) NO₂ (g) + H₂O (g) $\rightarrow$ HNO₃ (g) synthesis
D) PbO (s) + C (s) $\rightarrow$ Pb (s) + CO (g) double-replacement