The compound(s) among the following that is/are not typically synthesized using the Sandmeyer reaction:

(a) Chlorobenzene

(b) Bromobenzene

(c) Iodobenzene 

(d) Fluorobenzene

Choose the correct option:
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)

Sandmeyer's reaction used for the preparation of chlorobenzene and bromobenzene.
Iodobenzene and fluorobenzene can be prepared by direct reaction of the diazonium salt with KI and HBF4/.