A solicitation stipulates that any bid must be submitted electronically. After the bidding period closes, a supplier submits a complaint, stating that they do not know how to submit a bid electronically, and their in$-$person bids have always been accepted in the past.

How should the entity proceed with the complaint, and why?

The bid should be accepted. It is the fault of the entity that the supplier does not know how to submit a bid electronically.

The bid should not be accepted. The supplier is unqualified to perform the contract because of lack of technical knowledge.

The bid should not be accepted. The bid is not compliant with the requirements stipulated in the solicitation.

The bid should be accepted. Accepting the bid will avoid a protest and any other repercussions the stipulation may have caused.