When Spread Over the Inhabitants of the United States,fallout from Nuclear

When spread over the inhabitants of the United States,fallout from nuclear weapons tests and other environmental sources along with other manmade radiations contributes

A) only a small portion of 0.1 mSv to the equivalent dose of each person.
B) a dose of approximately 1.5 mSv to the equivalent dose of each person.
C) a dose of approximately 3.2 mSv to the equivalent dose of each person.
D) a dose of approximately 6.3 mSv to the equivalent dose of each person.