Not long ago, you requested bids from two companies, A and B, to create advertisements for the product you are in charge of. One afternoon, you receive an unnamed gift with no sender indicated. However, you suspect that it might be from one of these two companies. In such a situation, which of the following responses would you be more inclined to follow?
A: First, confirm who sent the gift, then politely decline.
B: Anyway, open it first. If it's something you like, then keep it.
C: Consult with your superior before making a decision.