Suppose a deadlock occurs in the schedule S given below.
S: l1(A),l3(D),l1(B),u1(A),l2(C),l2(B),l1(D),l2(B),l3(C),l4(A),l4(C),l5(A)
A transaction that causes the least number of cascading rollbacks is
decided to be chosen as victim, then which of the following transaction
cannot be chosen as a victim?
1. T3
2. T2
3. T1
4. Cannot be decided
