With increase in frequency of the EM waves, to be transmitted via ground wave propagation, there is
(1) an increase in attenuation, but no change in the range of coverage
(2) a decrease in attenuation, but no change in the range of coverage
(3) an increase in attenuation, there is also a change in range of coverage
(4) a decrease in attenuation, there is also a change in the range of coverage