If you tie two pendulums $"$A$"$ and $"$B$"$ from a lightly hanging rope from the ceiling, and push pendulum $"$A$",$ which one is likely to occur?

The energy would equally split between two pendulum $"$A$"$ and $"$B$",$ and both will begin oscillating simultaneously.

pendulum $"$B$"$ would not oscillate, until an external force is applied to it$.$

pendulum $"$A$"$ would oscillate faster than pendulum $"$B$"$

Pendulum $"$A$"$ would gradually stop oscillation, and pendulum $"$B$"$ would begin oscillating