Basic $\text{2PL:}$ Serializable
Strict $\text{2PL:}$ No cascading roll back
Rigorous $\text{2PL:}$ Is strict and transactions can be serialized in the order in which they commit.
Conservative $\text{2PL:}$ No deadlocks. May not be strict.
So, only statements $A$ and $B$ are TRUE.
The correct answer is $A; B.$