Which Pattern Describes the Curve of Long-Term Forgetting for Such

Multiple Choice

Which pattern describes the curve of long-term forgetting for such things as memory for a foreign language?

A) The curve falls off quickly and then levels off.
B) The curve falls off gradually during its entire course.
C) The curve falls off slowly at first, then quickly thereafter.
D) The curve shows that all learners achieve the same baseline after many years have passed.