(A) Glycol
![image](https://learnqa.s3.ap-south-1.amazonaws.com/images/1612528203925134553084vvH02tD5VmPV9.png)
reacts with HI to give ethylene.
(R ) Initially ethylene di-iodide is formed which being unstable loses a molecule of `I_(2)` and forms ethylee.
A. If both (A) and (R ) are correct and (R ) is correct explanation of (A ).
B. If both (A ) and (R ) are correct but (R ) is not correct explanation of (A ).
C. If (A) is correct but (R ) is incorrect
D. If (A) is incorrect but (R ) is correct.