Hi I need someone to solve me this question

3. Consider the log segment below that belongs to a database that uses the deferred update (No-undo/Redo) Recovery Protocol. 1. [start_transaction, T1] 2. [read_item, T1, X] 3. [read_item, T1, Z] 4. [start_transaction, T2] 5. [read_item, T2, Y] 6. [write-item, T1, X, 10] 7. [read_item, T2, X] 8. [commit, T1] 9. [start_transaction],T3] 10.[Read_Item, T3, Z] 11.[write_item, T2, Y, 20] 12.[Checkpoint] 13. [write, T3, Z, 30] 14. [commit, T2] With respect to the value of the Dirty bits and the pin-unpin bits that belong to the data blocks Which of the following statements is correct? a) At the crash time(end of log), the Dirty bit and the pin-unpin bits of the data item z values are are 0 's b) At the crash time(end of log), the Dirty bit and the pin-unpin bits of the data item Y values are; Dirty bit =0 and Pin-unpin =1 c) At the time of checkpoint, the Dirty bit and the pin-unpin bits of the data item Z values are; Dirty bit =0 and Pin-unpin =0 d) At the crash time(end of log), the Dirty bit and the pin-unpin bits of the data item X values are