The Significance of Ebbinghaus's Work Is in His ____

Multiple Choice

The significance of Ebbinghaus's work is in his ____.​

A) ​finding that longer material takes more time to learn
B) rigorous use of experimental control and his quantitative analysis of data
C) ​tolerance for boredom
D) use of large numbers of subjects to replicate his experiments
E) ability to further the approach and findings of Wundt