Tilda Is Learning Her Algebra and Memorizing the Formulas

Tilda is learning her algebra and memorizing the formulas. She is working on a problem that requires one of the formulas she studied yesterday. However, as she is thinking and trying to retrieve that information, she cannot seem to remember it. Clearly, Tilda did not successfully get the formula into her _____

A) storage.
B) positive bias of memory.
C) reconstruction area.
D) decoding zone.