What does the author mean by “The earlier slight may be more manufactured than real.” in para. 4?

A.Obama was not well prepared for Brown’s visit.

B.Obama arranged the reception low profile on purpose to show his not-so-warm relationship with Europe.

C.Both Obama and Brown arranged it on purpose to keep the achievement of the G20 summit not so highly expected.

D.The difference on the aim of the G20 summit divides the US and the UK.