For the following two transactions:

T1 begin 1 read A (obtaining A_balance)

2 write A_balance - $10 to A 3 read B (obtaining B_balance)

4 write A_balance+$10 to B end T2 begin 1 read A (obtaining A_balance)

2 write A_balance+$5 to A end

(a) Provide all the interleaved executions (or schedules).

(b) Find all the serializable schedules among the schedules obtained in (a).