One of the Greatest Hazards That Would Result from a Nuclear

One of the greatest hazards that would result from a nuclear attack is radioactive fallout. A security manager should be well informed concerning the full potential of damage associated with this type of disaster. Which of the following is an incorrect statement?

A) Gamma radiation most concerns civil preparedness planners as it cannot be detected by any of the human senses.
B) Gamma radiation is measured in units call roentgens.
C) In an all-out nuclear attack against U.S. military, industrial, and population centers, it is estimated that severe to moderate damage from the blasts and heat effects would occur in about 50 percent of the nation's area.
D) Gamma radiation can be detected only with special instruments.
E) It is estimated that millions of Americans could survive the radiation effects of a large- scale nuclear attack by seeking protection in fallout shelters.