Problem: Below is the schedule for two transactions Tl and T2. Please briefly explain whether each transaction satisfies two-phase locking protocol. Your grade depends on both your answer and explanation. Each line is an operation starting with the transaction the operation belongs to Lock-X(o) means request an exclusive lock n o. Lock-S(o) means request a shared lock on o Unlock(o) means release the lock it holds on o T1 Lock-X(A) Read(A) A :=A-50 Write(A) Lock-X ReadB) B=B+50 Write Unlock(A) Unlock T2 Lock-S(A) Read(A) Unlock(A) Lock-S ReadB) Unlock