Two small beads are initially at $A$ on an equilateral triangle made of uniform wires. The triangle is rotated about the vertical axis $AO$. The beads are released from rest simultaneously and slide down along $AB$ and $AC$ respectively (as shown in the figure). Which quantities are conserved as the beads slide down? (Friction is negligible)

  • A
    Angular velocity and total energy (kinetic + potential)
  • B
    Total angular momentum and total energy
  • C
    Angular velocity and moment of inertia about the axis of rotation
  • D
    Total angular momentum and moment of inertia about the axis of rotation

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