Answer is C but do not really suggest tracking (unless prepping for a comp) due the psychological disadvantage. Counting calories burned or intake is just not healthy to do in my opinion. It is not realistic and not necessary to lose weight. Imposing a commitment of counting will likely set you up for success because it is very difficult to maintain that. Also, losing one pound of fat a week is nice but not realistic for most. I would say half a pound is generally more realistic for most populations. Setting goals that are more attainable will likely result in more success.
Fuel the Movement,