From the Modern Day Quantum Theory of the Atom, Which

Multiple Choice

From the modern day Quantum theory of the atom, which theory postulates that the mass of the electron and its exact position cannot be deduced simultaneously and that we must be satisfied with the probability of finding the electron?

A) Pauli Exclusion Principle
B) Heisenberg uncertainty principle
C) Einstein's theory of relativity
D) Light as a particle and a wave
E) Bohr's model of the Hydrogen atom