A particle undergoing simple harmonic motion has time dependent displacement given by $x(t)\, = \,A\,\sin \,\frac{{\pi t}}{{90}}$. The ratio of kinetic to potential energy $o$ the particle at $t=210\,s$ will be
  • A$1/9$
  • B$1$
  • C$2$
  • D$0.33$
JEE MAIN 2019, Medium
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