If Electrons Are Collectively Compressed into a Very Small Volume

If electrons are collectively compressed into a very small volume where the Pauli exclusion principle become important in preventing one electron from occupying space near a second electron, what is the result?

A) The electrons generate a very large pressure to oppose further compression.
B) The electrons fall into orbit around one another in mutual pairs that reduce the restricted quantum space, allowing further shrinkage of the star.
C) Nuclear fusion occurs between electrons, producing energy and heating the star's core.
D) Half the electrons are transformed into antimatter (positrons) , which then annihilates electrons, producing a burst of energy and the explosion of the star.