# In the reaction , $\;CH_{3}OOH\; \underrightarrow{LiAlH_{4}}\; A \; \underrightarrow{PCl_{5}}\;B\;\underrightarrow{Alc.KOH}\;C \;$ , the product C is :

$(a)\;Acetaldehyde\qquad(b)\;Acetylene\qquad(c)\;Ethylene\qquad(d)\;Acetyl\;chloride$