In the equation $y = pq$ $tan\,(qt)$, $y$ represents position, $p$ and $q$ are unknown physical quantities and $t$ is time. Dimensional formula of $p$ is
  • A${L^{1}}{T^{ - 1}}$
  • B${L^1}{T^1}$
  • C${L^{ - 1}}{T^1}$
  • D${L^{ - 1}}{T^{ - 1}}$
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