The I/O patterns for objects in database NEWBILL need to be reviewed in detail. All of the
NEWBILL work runs under a single plan, NEWBILLPL. What START TRACE command should be
used to gather the I/O information needed for the objects in database NEWBILL?

A.
START TRACE(AUDIT) PLAN(NEWBILLPL)

B.
START TRACE(IO) CLASS(ALL) PLAN(NEWBILLPL)

C.
START TRACE(PERFM) CLASS(3) PLAN(NEWBILLPL)

D.
START TRACE(ACCT) CLASS(1,2,3) PLAN(NEWBILLPL)

Explanation: