Match the chemical conversions in List with the appropriate reagent in List II and select the correct answer using the code given below the lists:
List I

List II
1. `(i) Hg(OAc)_2, (ii) NaBH_2`
2. (i) alcKOH
3. Et-Br
4. `(i) BH_3, (ii) H_2O_2//NaOH`

Options

A. `{:(P,Q,R,S),(1,3,4,2):}`
B. `{:(P,Q,R,S),(4,1,2,3):}`
C. `{:(P,Q,R,S),(3,1,2,4):}`
D. `{:(P,Q,R,S),(4,2,1,3):}`

Answer

A