For identical total transmitted power, the ratio of $$\frac{S}{N}$$ for wide band FM to $$\frac{S}{N}$$ of DSB-AM (with $$m_a = 1$$)is :
( Given fm = 15 KHz & frequency.deviation =$$\pm$$ 75 KHz)

A

112.5

B

300

C

75

D

450