The Results from Hermann Ebbinghaus's Studies of the Forgetting Process

The results from Hermann Ebbinghaus's studies of the forgetting process revealed that:

A) memory decreases rapidly at first and then slowed noticeably afterward.
B) memory decreases at a more or less constant rate over time.
C) memory decreases slowly at first and then sharply decreased after 9 to 10 days.
D) memory remains relatively constant for the first 3 to 4 days and gradually decreases after this.