An Ideal power limited communication channel with additive white Gaussian noise with 1 MHz band width and Signal to Noise ratio of 15 is transmitting the | information at theoretical maximum rate. If the Signal to Noise ratio is reduced to 7, how much bandwidthis required to maintain samerate:

A

$$\frac{15}{7}$$ MHZ

B

$$\frac{4}{3}$$ MHZ

C

2 MHZ

D

None of these