[单选题]
12.20: “Both the position and momentum of an electronlq9bpa; c-cq 0 cannot be known exactlye v w/p(cg85p9rz)tyh at the same instant of time.” To who9(vp/ge rtczw5p 8yh)m is this concept attributed?
A. Pauli
B. de Broglie
C. Einstein
D. Dirac
E. Heisenberg
