The pattern of standing waves formed on a stretched string at two instants of time (extreme,mean) are shown in figure. The velocity of two waves superimposing to form stationary waves is $360\  ms^{-1}$ and their frequencies are $256\  Hz$. Which is not possible value of $t$ (in $sec$)
  • A$9.8 × 10^{-4}$
  • B$10^{-3}$
  • C$2.94 × 10^{-3}$
  • D$4.9 × 10^{-3}$
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