Here is a quiz. Which of the following systems is operating more effectively?

  1. A system with 128 MB of memory, running 3 applications using a total of 60 MB of memory.
  2. A system with 64 MB of memory, running the same 3 applications using a total of 60 MB of memory.
  3. A system with 128 MB of memory, running the same 3 applications using a total of 120 MB of memory.