If two events can not both occur in a single trial, they are ______ .

A．Quality improvement depends upon better definition and increased awareness of the requirements/specification
B．Project quality management must address both management of the project and the product of the projec
C．Recognition of key actions required of each team member is necessary to meet quality objective
D．Computer aided design systems can improve quality, but only at the expense of an increase in the cost of desig

A．needs satisfaction
B．process capability
C．product improvement
D．project team performance