Identify the formula based on which AD utilities provide the default number of workers.
A.
2 * (the number of CPUs on the database server)
B.
2 + (the number of CPUs on the database server)
C.
2 * ( the parallel_max_servers initSID.ora parameter in the database)
D.
2 + (the parallel_max_servers initSID.ora parameter in the database)