Low- Frequency Electromagnetic Fields with Potential Biological Effects Have Frequencies

Multiple Choice

Low- frequency electromagnetic fields with potential biological effects have frequencies of
Hz)

A) 400- 700
B) 10^{- 3}- 10^{- 5}
C) 1- 1000
D) 10^{- 5}- 10^{- 9}
E) 100- 10,000