TOPIC: "Monitor and Control Work" v "Control X"

I am taking my PMP certification test on Tuesday May 26th and feeling fairly confident about my preparation. However, one topic that has eluded me is the subtle difference between the integration process group's "Monitor and Control Work" process and other process groups' control processes.

Specifically,

1. Is it fair to say that the Monitor and Control Work encompasses the activities in the other control processes? For example, when a PM is performing, let's say "Control Costs", is she performing "Monitor and Control Work" as well?
2. If a situational question in PMP (of the sort - "which process is the PM performing") contains Monitor and Control Work and also a "control" process, which is a better answer?

Thanks very much
Harsh Agarwal