From the passage, what factual evidence provides information that the United States is on board with the testing of animals in other countries? A) Rumors are that the United States has given millions to support testing of migratory birds. B) The goal of this work is to enhance understanding of the role wild birds play in the movement of the avian flu virus around the world. C) The United States is already supporting efforts to develop animal surveillance and build diagnostic and laboratory capacity in at least 25 countries. D) The announcement supports the successful outcome of the second meeting of the International Partnership for Avian and Pandemic Influenza, held in Vienna, Austria, June 6-7.