The correct ordering from least to greatest wavelength is ________.
1) ELF, FM radio, microwaves, infrared, red, green, ultraviolet, x-ray, gamma ray
2) ELF, FM radio, microwaves, infrared, green, red, ultraviolet, x-ray, gamma ray
3) gamma ray, x-ray, ultraviolet, red, green, infrared, microwaves, FM radio, ELF
4) gamma ray, x-ray, ultraviolet, green, red, infrared, microwaves, FM radio, ELF