The criticism of the question's wording is just a little on the harsh side for my taste. After all, this is a one-point question with a 50/50 choice. Perhaps English is not the right language for QotD? Perhaps we need our own...

EXISTS[Method[ComputedColumn(TableA):Persisted="0"[Accesses(TableB:AnyColumn)]]]

Anyway, it's only one point, and everyone knows the real action happens in the QotD discussion, right? 😉 😎