The Nuclear Non-Proliferation Treaty is best described as __________.

A.
a treaty signed by 190 countries whose goal is to limit the spread of nuclear weapons
B.
a treaty signed by five countries after World War II pledging not to use nuclear weapons
C.
a treaty signed by the US and Soviet Union to freeze the number of ballistic missiles
D.
a treaty signed by the US and North Korea to reduce the number of nuclear warheads

Please select the best answer from the choices provided.

A.

a treaty signed by 190 countries whose goal is to limit the spread of nuclear weapons