Which of the following best describes the beginning of the World War II?

Which of the following best describes the beginning of the World War II?
A.France, Britain, and the United States declared war on Germany as a result of the Munich Agreement.
B.France, Britain, and the United States declared war on Germany following Germany’s invasion of Poland.
C.France and Britain declared war on Germany as a result of the Munich Agreement.
D.France and Britain declared war on Germany following Germany’s invasion of Poland.