`Ph-CH_(2)-O-overset(O)overset("||")C-CH_(3)+overset(Θ18)(OH)rarrX+Y:`
A. `X " is"Ph-CH_(2)-overset(18)(OH)`
B. `X " is "Ph-CH_(2)-OH`
C. `Y " is "CH_(3)-underset(O)underset("||")C-O^(Θ)`
D. `Y " is "CH_(3)-underset(O)underset("||")C-overset(18)(O^(Θ))`
