Zhang San and Li Si learned that four teams of A. B, C and D have won medals in 15 events (represented by ordinal numbers respectively). Among them, Team A won medals in events 1, 4, and 12. ; Team B received medals for events 2, 4, 7, 8, 11; Team C received medals for events 4, 5, 6, 12, 13; Team D received medals for events 1, 5; Wang Wu from 4 One of the 15 projects that the team won was singled out and told Li Si separately, and the name of the team that won the medal was told to Zhang San separately. After Wang Wu spoke to them separately, Li Si said: "I don't I know which team won the medal for this project. "Zhang San heard it and said," I know that project. "Li Si also said immediately:" I know that team, too. ". Based on this, which of the following are representative teams and projects that Wang Wu can pick out? ['Team A. item 1.', 'Team B, item 4.', 'Team C, item 12.', 'Team D, item 5.']