Execute the following PL/SQL command in the user session: 

Which statement is true about the effect of the command? 

Answer options:

A. All PL/SQL blocks that are executed subsequently in the session are traced
B. It enables all PL/SQL blocks that are compiled subsequently in the session for tracing
C. Only anonymous PL/SQL blocks that are executed subsequently in the session are traced
D. It enables only named PL/SQL block that are executed subsequently in the session for tracing

B