`Ph-C-=C-CH_(2)-CH_(3)underset(D_(2)SO_(4)//D_(2)O)overset(Hg^(2+)//D^(o+))toA`, A is:

Options

A. `Ph-underset(O)underset(||)C-CH_(2)-underset(D)underset(|)CH-CH_(3)`
B. `Ph-underset(O)underset(||)C-underset(D)underset(|)CH-CH_(2)-CH_(3)`
C. `Ph-underset(O)underset(||)C-CD_(2)-CH_(2)-CH_(3)`
D. `Ph-underset(OH)underset(|)CD-CH_(2)-CH_(2)-CH_(3)`

Answer

C

Explanation

`Ph-overset(O)overset(||)C-CD_(2)-CH_(2)-CH_(3)overset("Tautomerization")larr`