221. The National Institute of Standards and Technology (NIST) standard pertaining to perimeter protection states that critical areas should be illuminated up to?

Вариант ответа 1 - A. Nine feet high and three feet out.

Вариант ответа 2 - B. Eight feet high and three feet out.

Вариант ответа 3 - C. Eight feet high and two feet out.

Вариант ответа 4 - D. Nine feet high and two feet out.