A Study on the Long-Term Retention of Foreign Language (Spanish)

A study on the long-term retention of foreign language (Spanish) learned in high school in individuals who are elderly found that

A) most elderly did not even recall having taking a foreign language in high school.
B) a few individuals recalled having had a class in a foreign language in high school but could recall no content from the course.
C) many individuals recalled having had a class in a foreign language in high school and a small percent had retained some vocabulary.
D) not only did the individuals recall the foreign language courses, but as much as half of the vocabulary was retained nearly 50 years later.