Legal Optimistic Schedules

Below is a time line of when two transactions $($Ti and Tj$)$ performed actions on the database.

Ti begins transaction

ri$($A$)$

Tj begins transaction

wi$($B$)$

wj$($A$)$

Ti commits transaction

Tj commits transaction

For proposed action, select that if that action were added $($in isolation from the other proposed actions$),$ the resulting schedule result in physically unrealizable behavior.

wj$$ between steps $4$ and $5$

ri$($A$)$ between steps $5$ and $6$

wj$($B$)$ between steps $3$ and $4$

wi$($A$)$ between steps $5$ and $6$

rj$($B$)$ between steps $4$ and $5$

wi$($A$)$ between steps $3$ and $4$

rj$($A$)$ between steps $6$ and $7$

wj$($B$)$ between steps $4$ and $5$