15. Which of the following is NOT a correct consequence of the HeisenbergUncertainty principle:
(A) The shorter the lifetime of an excited state of an atom, the less accurately canits energy be measured.
(B) An electron in an atom cannot be described by a well-defined orbit.
(C) The momentum of an electron cannot be measured exactly.
(D) Measurement of one variable in an atomic system can affect subsequentmeasurements of other variables.
(E) A harmonic oscillator possesses a zero-point energy.