With the first choice you replace the consumed energy from the fat reservoir of the body
Fat contains
To replace you need to convert of your fat storage
Your loss in body ass
With the second choice you overcompensate your losses by 760 and add to fat stroge reservoir of your body
Your gain in body mass is
Because of the high energy content of fat
the average content of food is
the increase in fay is a very efficient way of storing energy