There has nothing to do with the choice; thus:
Are there any wafers?
Also note that below cannot be used as an adjective and consequently you need to change the word order: "Can I use 'are' in the question below?" Oddly enough, above can be used as an adjective: Can I use 'are' in the above question? / ... in the question above? (Please don't ask me why! I didn't invent the English language!
)
CB