Using the Terminology and Theories of a Network Model, the Tip-Of-The-Tongue

Using the terminology and theories of a network model, the tip-of-the-tongue (TOT) phenomenon would BEST be described as:

A) being in the right vicinity, but activation has not spread to the correct node
B) activation has spread to the correct node, but the level of activation is insufficient to cause the node to fire
C) being in the wrong vicinity
D) activation has spread to too many unrelated nodes to cause the correct node to fire