Two cubical blocks identical in dimensions float in water in such a way that $1$ st block floats with half part immersed in water and second block floats with $3 / 4$ of its volume inside the water. The ratio of densities of blocks is ..........

  • A

    $2: 3$

  • B

    $3: 4$

  • C

    $1: 3$

  • D

    $1: 4$

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