【单选题】

The author's assertions concerning the conditions that lead to the decay of the vacuum would be most weakened if which of the following occurred
A．Scientists created an electric field next to a vacuum, but found that the electric field was not intense enough to create a charged vacuum.

B．Scientists assembled a super heavy atomic nucleus next to a vacuum, but found that no virtual particles were created in the vacuum's region of space.
C．Scientists assembled a super heavy atomic nucleus next to a vacuum, but found that they could not then detect any real particles in the vacuum's region of space.
D．Scientists introduced a virtual electron and a virtual positron into a vacuum's region of space, but found that vacuum did not then fluctuate.