In a tvo$-$way message exchange synchronization protocol, sender A sends a message at $11$:$20$ AM of its local clock time that reaches at the receiver B at $11$: $35$ AM of its local clock time. Next, when Il replies back at $11$:$50$ AM of B$\text{'}$s local clock time it reaches at A at $11$: $35$AM of its local clock time. Find the clock offset of both the nodes and the propagation delay. $($Assume the propagation delay is equal in both the direction$)$