How to compare the Rev A & Rev B BOM at a time in Catia

Dear all Community Members,

I have small dought Rev Delta file for projects

Ex:-If I receive assembly file Revision-A & Revision-B with same assembly number but in rev B some parts are updated. but I don`t know which parts are updated.

2.I will extract BOM for Rev A assembly

3.I will receive Rev B File also, then if any chance to extract BOM for Both Assembly's in Catia