Which of the following are advantages of DB2 for z/OS data sharing over a standalone DB2 subsystem implementation? (Choose two.)

Which of the following are advantages of DB2 for z/OS data sharing over a standalone DB2 subsystem implementation? (Choose two.)
A . Reduced active logs
B . Reduced storage use
C . Higher transaction rates
D . Reduced lock contention
E . Increased data availability

Answer: CE