Two light waves whose equation are given respectively as $y_1 = 6\sin wt; y_2 =8 \sin (wt+ 8)$ super impose to form a interference pattern. The ratio of maximum to minimum intensities of the super imposed wave is

Question

$(a)\;49:1 \\ (b)\;1:49 \\ (c)\;1:7 \\ (d)\;7:1$