The Tip-Of-The-Pen Phenomenon Refers To

The tip-of-the-pen phenomenon refers to:

A) when tip-of-the-tongue states occur in sign language.
B) when Chinese writers know how to say a word, but do not know how to write the character.
C) when Japanese speakers cannot say a word that emanates from a foreign language.
D) when deaf individuals cannot remember the English word that means the same thing as a sign in American Sign Language.