What is the wavelength of a wave that has a frequency of 6.1⁢ x⁢ 109⁢ ⁢Hz ? c⁢ = λυ where c = 2.998 x 108⁢ m/s
a. 20.4 m
b. 2.04 m
c. 0.49 m
d. 0.049 m