I recently asked a question about omission of auxiliary verbs in coordinate clauses. But I don't know I MUST omit the subject too or I can keep it, I mean:
These product items can be processed separately to extract the data fields from each of them (e.g. price, bids, supplier, etc.), or be displayed to the user for visual comparison.
vs.
These product items can be processed separately to extract the data fields from each of them (e.g. price, bids, supplier, etc.), or they can be displayed to the user for visual comparison.
Are both valid? or which is better?