What is the author’s purpose for writing this particular passage?
A) to aid scientists on the cause and the effects of the avian flu
B) to warn the public how devastating the avian flu could potentially be if or when it arrives in the United States
C) to boast about how much the U. S. government is donating to the cause for the sake of ’good P. R.’ (personal relations)
D) to announce the efforts being made by the U. S. government to help other international agencies in the fight against this serious social epidemic