Which of These Transformations Cannot Be Classified as a Reduction $\rightarrow$

Which of these transformations cannot be classified as a reduction?

A) RCH₂Cl $\rightarrow$ RCH₃
B) RCH=CH₂ $\rightarrow$ RCH₂CH₃
C) RCOOH $\rightarrow$ RCH₂OH
D)

E) All of these are reductions.