Once you've followed sdg's suggestion of using "devoid" instead of "void", then (A) would work in a suitable context, but not (B).
Yes, I do understand that there is nothing wrong with [.....void of conversation]. I found many examples of "void" used in this way.
Here is my sentence in full: Every time we decide to eat out as a family, everyone seems to be elated about spending quality time with other family members. As soon as we arrive at the restaurant and are seated at our table, everyone aoutomatically reaches into their sheath of electronic devices and retrieves their mobile phone to escape back into their digital world which is
void of conversation/ where it is
void of conversation.
As you can see "
void" is the best choice here.
Thanks again