A benzene ring deactivated by strong and moderate electron withdrawing group that is, any meta directing group, is not electron rich enough to undergo Friedel-Crafts ranctions.
Friedel-Crafts reaction also do not occur with `HN_(2)` group as it react with `AICI_(3)` and produce deactivating group.
Answer the following question :
Which of the following cannot be starting for this compound
`Ph-underset(O)underset(||)(C)-CH_(2)-Ph ?`
A.
B.
C.
D.
