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