The Essential Concept Underlying Radiation Protection Is That

The essential concept underlying radiation protection is that

A) any organ in the human body is vulnerable to damage from exposure to ionizing radiation.
B) only critical organs in the human body are vulnerable to damage from exposure to ionizing radiation.
C) only the reproductive organs in male and female humans are vulnerable to damage from exposure to ionizing radiation.
D) no organ in the human body is vulnerable to damage from exposure to ionizing radiation.