But when the WTO headquarters issue came up, and Germany made an offer and a pitch to get the WTO to be headquartered in Bonn, the Swiss suddenly realised they were vulnerable and began improving their offers.

Based on that paragraph can we conclude that this sentence is true?
The Swiss trying to get the WTO headquarters to be located in Germany.

Choose your answer from: [I] Yes; [II] It's impossible to say; [III] No;
[III]