Match the reactions in List I with the final products formed as given in List II.

List I		List II
W	\(\text{C}_6\text{H}_5\text{CH}_3 \xrightarrow{\large{(i)\text{CrO}_3 + (\text{CH}_3\text{CO})_2\text{O};\ (ii)\text{H}_2\text{O} + heat}}\)	P	\(\text{R}_2\text{CO}\)
X	\(\text{RCOOC}_2\text{H}_5 \xrightarrow{\large{(i)\text{DIBAL-H};\ (ii)\text{H}_2\text{O}}}\)	Q	\(\text{C}_6\text{H}_5\text{COCH}_3\)
Y	\(\text{RCN} \xrightarrow{\large{(i)\text{R-Mg-X /dry ether};\ (ii)\text{H}_3\text{O}^+}}\)	R	\(\text{C}_6\text{H}_5\text{CHO}\)
Z	\(\text{C}_6\text{H}_5\text{COCl} + (\text{CH}_3)_2\text{Cd in dry ether} \rightarrow\)	S	\(\text{RCHO}\)

1. A W - R    X - P    Y - Q    Z - S
2. B W - Q    X - P    Y - S    Z - R
3. C W - S    X - R    Y - Q    Z - P
4. D W - R    X - S    Y - P    Z - Q