  We exploit complete complementarity relations to fully characterize various
aspects of quantumness in a Bhabha scattering process $(e^-e^+ \rightarrow
e^-e^+)$ at tree level. For illustrative purposes, we consider three different
situations: in the first one the initial electron A and positron B are
described by a factorized state; in the second one, the incoming particles are
described by local superpositions and the total state is factorized; finally,
we consider the more general initial state in which A and B can be entangled.
We find that the QED scattering process generates and distributes quantum
information in a non-trivial way among the particles, with CCR being fulfilled
both for initial and final states.
