n the given example, why is packet switching considered more efficient for sharing a $1$ Mbps link among users with alternating activity and inactivity? $($Select all that apply$)$

Group of answer choices

With packet switching, each user reserves a constant $100$ kbps of the link$$s capacity.

Circuit switching would require reserving $100$ kbps for each user regardless of their activity.

Packet switching allows users to dynamically share the link$$s capacity during their active periods.

Circuit switching is more cost$-$effective for users with intermittent activity.

Packet switching ensures predictable end$-$to$-$end delays for all users.