What will happen to the entropy and free energy of the gasses when the partition is removed? Consider a container of volume $ 5.0$  L that is divided into two compartments of
    equal size. In the left compartment there is nitrogen at $1.0$ $atm$ and $25 °C$; in the
    right compartment there is hydrogen at the same temperature and pressure. What
    will happen when the partition is removed?       
  
  
  $A) $The entropy decreases, and the free energy decreases.
  $B)$ The entropy increases, and the free energy decreases.
  $C) $The entropy increases, and the free energy increases.
  $D) $The entropy decreases, and the free energy increases. 


Logic tells that upon removing the partition, randomness increases and hence entropy increases. I am confused about free energy. First law of thermodynamics has to be applied , I think. But I can't seem to get the right direction.
A Spontaneous process is characterized by an increase in the total entropy (for both system and surroundings).

Spontaneous processes are characterized by a decrease in free energy (analogous to the decrease in gravitational potential energy occurring for a ball rolling downhill).